left well alone的用法和樣例：
例句
- Last week she ruined the whole job while trying to put right a small mistake, so this time she left well alone.
上個星期她在糾正一個小錯誤時把整個工作都搞砸了，所以這次她保持原樣不動了。 - The present system has worked satisfactorily, so why change it? My advice is to leave well alone.
目前這個制度執行情況令人滿意，為什麼要改變呢？我侍建議是聽其自然。
