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But what about on the surfaces of chemically exotic worlds ?

但是关于地表化学角度污染这个世界怎么办呢？

What will I lose that I 'm chemically attached to ?

如果我丢失了那些化学品上依赖会怎么样？

Contaminated instruments and floor surfaces should be chemically disinfected .

污染的器材和地面要用化学药物消毒。

Researchers believe other comets are chemically similar to halley 's comet .

研究人员相信，其它的彗星在化学组成上与哈雷彗星相似。

But not every place even within one city is the same chemically .

但即使是同一城市的每个地区在化学气味上也并不一致。