Question

: The villain in the atmosphere is carbon dioxide. It does not seem to be a villain. It is not very

翻译： The villain in the atmosphere is carbon dioxide.
It does not seem to be a villain. It is not very poisonous and it is present
in the atmosphere in so small a quantity — only 0.034 percent — that it does
us no harm. What’s more, that small quantity of carbon dioxide in the air is essential to
life. Plants absorb carbon dioxide and convert it into their own tissue, which
serve as the basic food supply for all of animal life (including human beings,
of course). In the process they liberate oxygen, which is also necessary for
all animal life. But here is what this apparently harmless and certainly essential gas is doing to us: The sea level is rising very slowly from year to year. In all likelihood, it
will continue to rise and do so at a greater rate in the course of the next
hundred years. 大学英语精读 第三版第二册 Unit5 全文地址 求全文
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Answer 1

大气中的恶棍是二氧化碳。
二氧化碳似乎并不是一个恶棍。它的毒性不大，而且二氧化碳在大气中的含量如此之少--只有百分之零点零三四--以至于它不会对我们造成伤害。并且空气中的那些少量的二氧化碳对生物有着至关重要的作用。植物吸收二氧化碳并把二氧化碳转化成自身的组织，而植物组织为所有动物（当然也包括人类）提供最基本的食物。在这个过程中，植物还释放氧气，氧气同样是所有动物所必须的。但是，这就是这种看似无害并且至关重要的气体正在对我做的事：它正使海平面逐年慢慢上升。十有八九，海平面会在接下来的一百年里以更快的速度持续上升。