in the last three years与in the past three years的区别,好像一个用过去式,一个用现在完成时?

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• in the last three years与in the past three years的区别,好像一个用过去式,一个用现在完成时?
• in the last three years与in the past three years的区别,好像一个用过去式,一个用现在完成时?
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