google的reinvent the wheel解释，其实说的都是一个意思，就是”浪费时间做别人已做好的事“1.To redo work unnecessarily when it has already been done satisfactorily; to rethink an already working system, technique, etc.2.to waste time recreating something that already exists in a perfectly usable and acceptable form 3.Reinventing the wheel is a phrase that means to duplicate a basic method that has long since been accepted and even taken for granted.
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