left well alone

• v. 不要去管它(听其自然)

left well alone的用法和样例：

例句

1. Last week she ruined the whole job while trying to put right a small mistake, so this time she left well alone.
   上个星期她在纠正一个小错误时把整个工作都搞砸了，所以这次她保持原样不动了。
2. The present system has worked satisfactorily, so why change it? My advice is to leave well alone.
   目前这个制度执行情况令人满意，为什么要改变呢？我侍建议是听其自然。