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来源:雅诚德英语网
As people began to domesticate animals, they trained them to pull the litters and sledges.
当人们开始驯服动物时,他们训练它们拖担架和拉雪橇。
As people began to domesticate animals, they trained them to pull the litters and sledges.
当人们开始驯服动物时,他们训练它们拖担架和拉雪橇。