坐在这谈论化学的人没有意识到原子本身在某种程度上就是一种假设，他们之间的相互反应更是如此，而生物反应又比前两者更甚了。
People who sit there and talk about it don't realize that molecules themselves are somewhat hypothetical, and that their interactions are more so, and that the biological reactions are even more so.
只是在几十年前认识了其生物性，有了化学杀虫剂和空中撒药之后，人们才开始努力控制这种虫害。
Only when its biology was understood and chemical pesticides and aerial spraying became available a few decades ago, could efforts be made to control the insect.
这一发现表明了“与前地球生物的化学品清单和组织棚架的一些生命缺失的环节。”
The finding suggests a "missing link" between the pre-biotic Earth's chemical inventory and the organizational scaffolding essential to life.
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