Useful idiom: draw the line

7년 전

This is one of the most commonly used and useful idioms used in everyday spoken language, news, academic work, business.

You know the routine: 
How do you say it in your language? Make phrases in English.

I draw the line at the use of chemical weapons on children. If you cross that line I am launching missiles.

I draw the line at people lying. If you lie to me you are no longer my friend.