biogenic agentbiologic agent生物: living things; living beings ...营: seek生物营养素: biological nutrient微生物营养群: trophic groups of microorganisms营力: agency; agent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:生物营力,即可在微信中查询翻译