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来源:雅诚德英语网
It is impossible to learn the sequence of events that led to our developing the concept of number.
我们无法了解导致我们产生数字概念的事件的发生顺序。
It is impossible to learn the sequence of events that led to our developing the concept of number.
我们无法了解导致我们产生数字概念的事件的发生顺序。