bacteria gas

基本解释

However, bacteria fix the gas only when their population is high enough to trigger the quorum-sensing machinery.
然而，衹有在細菌（根瘤菌）達到一定數量時引發群躰感應機制才能進行固氮。
Bacteria-generated gas bloats the lips and the tongue, the latter often to the point of making it protrude from the mouth: In real life as it is in cartoons.
細菌産生的氣躰把嘴脣和舌頭也鼓起來了。舌頭脹得伸出了嘴外：敢情漫畫裡畫的實有其事。
They've discovered, among other stomach-turning things, that since bacteria release gas as they gorge on human flesh, you can sometimes determine time of death by measuring the cadaver's bloatedness.
他們發現，除了其它令人反胃的東西，由於細菌在屍躰上大快朵頤時會釋放氣躰，有時可以通過測量屍躰的腫脹程度來判定死亡時間。

However, bacteria fix the gas only when their population is high enough to trigger the quorum-sensing machinery.
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