●be the last/final ˈstraw ( be the ˌstraw that breaks the camel’s ˈback) be the last in a series of bad events, etc. that makes it impossible for you to accept a situation any longer是压垮骆驼脊梁的最后一根稻草；是（一系列遭遇中）最终使人不堪忍受的事◆I’ve had a terrible day, and this traffic is the last straw, I can’t take any more.我这一天已经够倒霉了，这样堵车更是雪上加霜，我受不了了。