non-methane compound 非甲烷化合物
methane compound
甲烷化合物
以上为机器翻译结果，长、整句建议使用 人工翻译 。
One key element in searching for life on Mars is the presence of methane in the Martian atmosphere As a simple carbon compound, methane is often a precursor to the formation of the complex organic chemicals that make life possible.
FORBES: Curiosity Sniffs The Martian Atmosphere But Finds No Sign Of Life
Its first air and soil tests showed strong traces of methane, a compound usually produced by living things.
NEWYORKER: The Martian Chroniclers
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