drawn the line

• v. 划一界线(立界限)

drawn the line的用法和样例：

例句

1. I'm sorry but that's where I draw the line; I won't help him to cheat.
   对不起，我只能做到这一步，我不能帮助他行骗。
2. I don't mind helping, but I draw the line at doing everything myself.
   我可以帮忙，不过什麽事都让我干，那就不行了。