PHRASE
重復(fù)勞動(dòng);白費(fèi)力
If someone is trying to reinvent the wheel, they are trying to do something that has already been done successfully.
例句
Some of these ideas are worth pursuing, but there is no need to reinvent the wheel.
這些觀點(diǎn)中有些值得進(jìn)一步探究，但是沒有必要全盤重來。