biogenic gas生物: living things; living beings ...成因: cause of formation; contribu ...气体: gas; gaseous fluid生物成因气: biogenetic gas非生物成因: abiogenesis; abiogeny; abiotic origin下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:生物成因气体，即可在微信中查询翻译
