土壤首先被其中生长的农作物消耗，其次被细菌活动消耗。
The soil is depleted first by crops grown in it and second by bacterial action.
次生生物成因气常与后来的煤层含水系统的细菌活动有关。
Secondary biogenic gas is usually associated with late stage groundwater system and bacteria activity.
微生物燃料电池工作原理是能把电子传递到阳极的细菌活动。
Microbial fuel cells work through the action of bacteria which can pass electrons to an anode.
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