在这些动物，即“巨型土壤动物”消失以后，沼气量的急剧下降可能造成了气候的改变。
The climate may have changed due to a dramatic fall in atmospheric methane when these animals, or "megafauna", disappeared.
在这些动物，即“巨型土壤动物”消失以后，沼气量的急剧下降可能造成了气候的改变。
The climate may have changed due to a dramatic fall in atmospheric methane when these animals, or "megafauna", disappeared.
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