所以一些科学家就在垃圾填埋场进行实地挖掘调查。他们在垃圾填埋场发现了许多叫做巴氏甲烷八叠球菌的产甲烷生物，简称。
So scientists did some digging, literally, to investigate. They found a particularly hearty methanogen called named Methanosarcina barkeri, or just M. barkeri, that can survive at low pH levels.
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