What Causes These Pollutions 什么引起这些污染
causes of these 病害产生原因
these causes 这些原因
causes of these gaps 专家小组成员发言后
What causes these misunderstandings?
是什么导致了这些误解呢?
But what causes these individual differences?
但是,是什么导致了个体间的这些差异?
It is hard sometimes to figure out exactly what causes these.
有时候很难弄清楚到底是什么导致了这些问题。
More and more of these famous people are using their popularity to bring attention to humanitarian and environmental causes that are important to them.
VOA: special.2009.05.08
So, you're familiar with some of these bacteria like salmonella, or the micro bacterium that causes tuberculosis are shown here.
所以 你们很熟悉像沙门氏菌这样的细菌,或者像这儿的引起结核的小细菌
These are the leading causes of death in 1900.
这些是1900年的主要死亡原因
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