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English

The methane in clathrates typically has a biogenic isotopic signature and highly variable δ13C (−40 to −100‰), with an approximate average of about −65‰ .

Chinese

包合物中的甲烷一般會具有細菌性的同位素特徵,以及很高的δ13C值(-40 to -100‰),平均大約是 -65 ‰。