Climate and People's Life
  Man has been on earth about one million years.  He has managed to live on every part of the planet, even though some climates have made life more difficult than others.  Sometimes man moved; sometimes he remained and endured the discomforts.  Where man has remained, he apparently has undergone some physical changes that have helped him adapt to his climate.
  It is thought that differences in skin color are the result of climatic adaptation.  People from hot climates generally have burning black or brown skin that resists the sun's burning rays.  The lightest skinned people generally come from colder regions, where they have less exposure to the sun.  People with skin of other colors, such as yellow, red, and olive, generally come from areas where they have also had to adapt to other climates.
  Man's size also seems to vary according to climate.  People living in colder regions are generally larger than those living in hotter ones.  This difference might be explained by the fact that big people have less skin compared to weight than do small people.  The less skin a
person has relative to his weight, the easier it is for him to keep warm.
  As part of the natural environment, climate greatly affects human activities.  Climate has significant effect on agriculture.  Climatic factors such as the length of the growing season, the total amount of rainfall, and the daily and seasonal changes in temperature restrict the kinds of crops that can be grown.
  Climate also affects transportation.  In areas of frequent storms, transportation is often slowed down or interrupted.  Water transportation in many areas is impossible if the river is frozen.  Land transportation may be blocked by heavy snowfall.  Air travel especially is affected by stormy weather.
  Major concentrations of population in the world are in the humid, warmer regions, where the development of agriculture is not restricted by poor climatic conditions.  Fewer people live in areas with very dry, very wet, or very cold climates.  However, with the development of technology, such as air conditioning and central heating, people are becoming less confined to so-called favorable climates.
  It is true that man changes his living habits in order to adjust to climate,  but climate changes as well, though more slowly.  Man adapts constantly to changes, and science has played an important part in helping people adjust to almost any condition.  By learning more about his climate, man will find a way to adapt to or control it and live a more comfortable life.
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He has managed to live on every part of the planet, even though some climates have made life more difficult than others. 尽管有些气候已经使人类的生活比其他的气候更加困难，但人类还是设法生存在这个星球的各个地方。
句中的manage 作“设法完成”解，有“经过努力最后终于完成”的意思，作此义解时，后面多跟不定式。又如：
He managed to escape from the fire. 他设法从大火中逃了出来。
The room was very dirty, but he managed to clean it. 这个房间很脏，但是他终于把它打扫
干净了。
manage 和try 都有“设法”的意思，但前者强调“终于完成了”，而后者则可能完成，也可能没完成。例如：
He tried to escape from the fire, but was badly burnt. 他设法从大火中逃出来，但还是被烧成重伤。
He managed to escape from the fire and finally succeeded. 他设法从大火中逃出来，终于成功了。
even though 是连词词组，作“即使”“尽管”解，引出表示让步的状语从句。even though 也可以用even if 代替，意思和用法相同，又如：
They'll stand by you even though you don’t succeed. 即使你不成功，他们也会支持你的。
She won't leave the TV set, even though （if） her husband is waiting for his supper.
Sometimes man moved; sometimes he remained and endured the discomforts. 有时候，人
们迁移；有时候留下来忍受着艰难。
endure 的意思是“忍受”“忍耐”，后跟名词、不定式或动词-ing形式作宾语。又如：
I can't endure that woman. 我对那个女人忍无可忍。
I can't endure to see / seeing children suffer. 看着儿童受苦，我可受不了。

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