化学家们在实验室合成有机化合物的时候，常常会得到一堆分子：一半右旋，一半左旋。
When chemists synthesize organic compounds in the lab, they often wind up with a mix of molecules: half are right-handed, and half are left.
有机构称，实验室灵长类动物受虐待情况愈加严重。
Abuse of Laboratory Primates Escalates, Organization claims.
一位太空生物学家在《科学》上说这可以“重新定义生命”，因为这是很重要的实验室证据，它表明有机体可以有比以前认为更灵活的化学组成。
This "redefines life" said the astrobiology researchers reporting in Science magazine, because it was laboratory evidence that organisms can be more chemically nimble than previously thought.
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