超级英语高手来帮我翻译这篇中文的文章吧`~急啊..

英语高手，帮我翻译一下这文章吧！~

Have you ever thought about your body changes?
你曾有考虑到关于你身上的变化吗？
Up to about the age of eight or nine,
在8，9岁的时候
girls and boys look quite alike.
女孩和男孩看上去几乎一样。
They have similar shaped bodies and their voices sound almost the same. As they grow, all their organs (器官 ) grow, too.
他们有着相似的体形，而且他们的声音听起来也似乎一样，当他们成长，他们的所有器官也跟着成长。
After the age of ten, often at eleven or twelve, boys' and girls' bodies start changing. The changes mean their bodies are getting ready to have children when they're older.
女孩们的身体开始变化。变化意味着她们的身体准备着为他们长大后生孩子。
The changes don't happen to everyone at the same time.
变化不是同时会在每个人身上发生的。
Each person has his or her own body-changing timetable.
每个人都有他（她）自己的身理周期表。
By the time they're eighteen, they should be complete.
当他们十八岁的时候，他们应该长大了。
Girls start changing some years sooner than boys.
女孩们开始变化的年数要慢于男孩们。
Until they're fifteen or so, they grow faster than boys of the same age.
直到她们十五岁或左右的时候，她们成长得比同样年龄的男孩要快。
As years go by, boys catch up and grow taller and stronger.
光阴荏苒，男孩们变化，长得更高更强壮。
Girls grow taller and heavier as well, their faces and breasts ( 胸部) become fuller.
女孩们长得更高更胖，她们的胸部和脸庞变得更丰满。
As well as all the changes you can see happening,
就像所有你可以看见的改变一样，
other important changes that you can't see are happening inside your body at the same time.
别的重要的改变也同时在你看不见的地方开始了。

Today, in modern civilization, the car has become an indispensable means of transport. Since the birth of the first vehicle since 1886, it brought to people's lives and greatly facilitated the work, but also has become one of the pillars of modern material. However, we should also note that the rapid development in the automobile industry, and maintain the continuous increase in the production of motor vehicles, the air pollution has brought automobile, automobile exhaust pollution. The main hazard is automobile exhaust to form smog. 1943, Los Angeles, California in the United States, 2.5 million cars burning off 1,100 tons of gasoline per day. After the combustion of hydrocarbons, such as gasoline ultraviolet rays of the sun under a chemical reaction, forming a light blue smoke, most people suffering from the city jealous, headache disease. Later, it was known as photochemical smog of this pollution. Los Angeles twice in 1955 and 1970 occurred photochemical smog, and more than 400 former featured poisoning, respiratory failure and death, the latter a city of three-quarters of the sick. This is the history to be called "the world's eight major hazard" and "20th Century 10 environmental hazards," Los Angeles smog in one of the incidents. It is a profound understanding of these incidents to the people of the dangers of automobile exhaust. 200 vehicle emissions of organic compounds, including benzene, a highly carcinogenic polycyclic aromatic ingredients, the human body is a long-term cumulative effects. Medical studies have revealed that a large number of benzene vapor inhalation a short period of time can cause life-threatening acute poisoning, the long-term repeated exposure to low levels of benzene can cause chronic poisoning. Data show that PM10 concentrations increased with a series of negative effects on human health closely. American scientists have done in Utah Valley epidemiological studies found that the PM10 air to have a significant impact on human health can lead to cardiovascular disease, respiratory disease and other diseases in patients with sensitive physical death. It is estimated that 60,000 PM10 lead of the United States and the United Kingdom each year 10,000 people died. Through screening and comprehensive analysis of childhood lead poisoning caused by automobile exhaust pollution is the main factor, as automobile exhaust lead dust accumulation in more than one meter above the ground, and that is exactly the children's activities with the breathing zone of pollution caused by it has become one of the major causes of childhood lead poisoning. Include automobile exhaust pollutants : carbon monoxide, hydrocarbons, nitrogen oxides, sulfur dioxide and soot particles (some heavy metal compounds, lead compounds, smoke and oil mist), smell (formaldehyde). According to statistics, about 1,000 vehicles a day 3/hm emit carbon monoxide, hydrocarbons 200-400kg and nitrogen oxides 50-150kg; Los Angeles and other mobile sources of pollutants emitted by motor vehicles accounted for 90% of total atmospheric pollutants. According to the State Environmental Protection Administration predicted that in 2005 China's vehicle emissions in urban air pollution will reach 79% of the share of air pollution in automobile exhaust is the "culprit." Automobile exhaust the highest level of carbon monoxide, it can enter through the respiratory tract of gestation, the blood was absorbed, combined with hemoglobin to form carboxyhemoglobin, lowering blood oxygen, blood weaken the oxygen supply of human tissues, resulting in tissue hypoxia, which led to headaches and other symptoms, or suffocation. The content of nitrogen oxides from automobile exhaust smaller, but highly toxic, toxicity is three times the sulfur oxides. Alveolar oxygen into nitrogen compounds, lead to the formation of nitrite and nitrate, a sharp stimulus to the lung tissue, increased pulmonary capillary permeability, leading to emphysema. Nitrite with hemoglobin, forming ferrihemoglobin caused tissue hypoxia. 200 species of hydrocarbons from automobile exhaust, C2H4 concentration in the atmosphere indicated to (1%), to enable some plants dysplasia. Automobile exhaust also found 32 species of polycyclic aromatic hydrocarbons, including 3,4 - benzopyrene and other carcinogenic substances. When the concentration reaches 0.012ug/m3 benzopyrene in the air, residents will have a marked increase in the number of lung cancer. More nearly away from the road, the greater the traffic flow on the highway, the higher the mortality rate of lung cancer.

好说

The beginning go to which places can Chinese tour arrive?
A, go to China to travel for the first time, should arrive first which places?
Answer:This wants to see first how much time can you arrange.Generally speaking, go to China for the first time, should arrive etc. of Peking, Shanghai, Xian ground first.
Peking is a Chinese politics, cultural center.In here you can sight-see the great wall of a segment- eight reach the 岭 ;The place that clear and pure two imperial house live- past temple;The Manchu Dynasty resists garden- Summer Palace and the North Seas, can also taste Peking of the orthodox school to roast duck, rinse the mutton.
Shanghai is a Chinese biggest city, making choice of purchase the product here quite the cheese, a light repast, pastry and handicraft article, textile products that species of Shanghai are of a great variety, will make you feel satisfied.Leave there are only several hours in Shanghai, Suzhou and Hangzhou of the road, is a representative of Chinese park art, was been called the " heaven" by the person.
Xian is the point of departure of the ancient Silk Road, is also a Chinese history to found a capital one of the most cities up.Qin's terra cotta warrior of the new exhumation was become" the eighth miracle in world";The big wild goose tower, the drum building is the building that the Tang Dynasty stay;You can arrive the pure pond of 华 that YANG2 GUI4 FEI take a shower to wash the hot springs 澡 ;Be the yellow descendant of 炎 can also call to pay respects to leave not far emperor 陵 in Xian.Can also enjoy to imitate Tang's music and song and dances in Xian, taste article Tang's vegetables.
Two, go to China to travel when the best?The winter go where good?
Answer:The Chinese territory is large, everyplace landscape, the weather difference is very big, can say a year, the four seasons can travel.Such as go to Peking, Shanghai, Xian that above-mentioned say best is in the spring, autumn two quarterses.
In winter you if afraid and cold can go to" the spring city" of have no intense heat and sever winter- Kunming, there is fascinating stone wood there and pond of 滇 , can also arrive a version of west 纳 to enjoy the tropical landscape.Can also go to the laurel wood, along river of 漓 with the current but descend arrive the sun 朔 ," laurel wood the landscape number one in the world, the sun 朔 landscape A laurel wood", this tour item will not make you disappoint.Did not see the ice snow HongKong-Macau compatriot, might as well at a, February goes to the strand of 哈尔 , there is the world of the ice snow, can with the view snow landscape, see the ice light, ski, skate.
Three, have to deserve most to buy what things in China?The where buy quite the cheese?
Answer:The handicraft article, silk, china, carpet, the cotton textile product of China at possess the great reputation in the world, and even more reasonable than purchasing the price in other places of world, choose the leeway larger.Chinese everyplace has the oneself the special product and can buy, saying the enamel, carpet of Peking for example;The Chinese clothing, cotton textile product of Shanghai;The silk of Hangzhou;The curio of Suzhou;The going to Xian you can buy the terra cotta warrior, Tang three colourful.If you dislike troublesome, can also buy thing once together in the comity store of Peking, Shanghai, the general sources of the comity store of big city Cities are all more ample, and generally can with generation you check.
Love the visitor of art, can purchase the calligraphy and curios still in China.But remember and must have the invoice and authenticate the marking( namely red paint marking) formally, just meet the trouble in the maritime customs unlikely.
Big wild goose tower wild goose pagoda of the past temple Imperial Palace
Summer Palace Summer Palace drum building drum tower emperor 陵 the tomb of Huangdi
Qin terra cotta warrior terra cotta soldiers and horses of the Qin Dynasty

妈妈眯呀!太多了!

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