1徒劳，白费力气
2你错了，请收回前言
3 我快疯了
4 熟能生巧
1 in vain
2 You are wrong.Please take back your words.
3 I'm going crazy.
4 Plenty of practice will make you perfect in what you are doing.
1、白费力气 make repeated futile attempts
2、你错了，所以请承认错误吧。 You are wrong, please accept that you are wrong for what you said.
3、我快疯掉了。I'm going crazy.
4、业精于勤 After you have plenty of practice in what you are doing, you will be perfect in it.
补充：
通俗英语如上。
1.与幻想之敌作斗争(作无益的斗争，白费力气，徒劳)
2.你错了,请收回前言(承认说错)
3.我快要发疯了
4.熟能生巧
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