I've had a terrible day, and this traffic is the last straw, I can't take any more. 我這一天已經夠倒霉了,這樣堵車更是雪上加霜,我受不了了.

the last/final straw; the straw that breaks the camel's back: the last in a series of bad events, etc. that makes it impossible for you to accept a situation any longer 壓垮駱駝的最后一根稻草;終于使人不堪忍受的最后一件事(或因素等)



I put up with a lot from this guy. He borrowed my clothes, he borrowed my money, he borrowed my tennis racket. But when I caught him using my toothbrush that was the last straw, so I kicked him out!"

我對這個家伙夠寬容的了.他借我的衣服穿,問我借錢,借用我的網球拍.可是,當我發現他用我的牙刷的時候,這就叫我無法忍受了.所以我把他趕了出去.