1. Most of the chlorofluoromethanes reside in the lower stratosphere.
大多数氯氟甲烷存留在平流层下部。
 

2. Unfortunately , all of us who use computer screens have nearly spherical, highly reflective objects stuck to our faces.
不幸的是，我们每位电脑使用者脸上都镶著接近球状、高反射度的东西：眼球。

3. He said despite economic gains throughout the hemisphere, too many people remain mired in poverty.
他说尽管整个半球的经济在增长，太多人仍深陷在贫穷的泥潭中。 

4. The theory caused a stir in Western academia last year when it was put forward in the journal Biosphere and is considered far-fetched by many.
当这个理论第一次在生物圈杂志上提出时，在西方学术界引起了一阵轰动，很多人认为这个理论很勉强。

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