reinvent the wheel
[ri:invent hwi:l]
重复发明；无谓地重复；
浪费时间做无用功
To reinvent the wheel means to waste time creating sth that already exists and works well.
EXAMPLES
1. Am I reinventing the wheel?
我做的是也许别人早就做过了？
2. I have dedicated myself to learning from other people's experiences so that I do not 原由网w原由网aste time trying to reinven//www.58yuanyou.comt the wheel.
我专注于学习别人的经验，这样我就不会浪费时间做无用功。
ri//www.58yuanyou.comse [raz]
过去式: rose [rz]
过去分词: risen |rzn]
v. 上升;升高;升起
Pay attention to the pronunciation of the participle: risen!
If something rises, it moves upwards.
EXAMPLES
1. Smoke was rising from the chimney.
烟从烟囱里升起。
2. The river has riswww.58yuanyou.comen (by) several metres.
河水上升了好几米。
电话：
18962288585
