病从口入祸从口出 Illness comes in by mouth and comes out by it.
笑里藏刀 a smile to hide one's hate
留得青山在，不怕没柴烧 Where there's life there's hope
海底捞月 to fish in the air
海底捞针 to look for a needle in a bundle of hay
差之毫厘失之千里 A miss is as good as a mile
既往不咎 Let the dead bury their dead.
杀身成仁 to sacrifice one's life to preserve one's virtue complete
杀鸡焉用牛刀 Take not a musket to kill a butterfly
小Car笔记：
a bundle of：一捆(一扎，一包)
as good as：和 ... 几乎一样
virtue：德行，贞操，美德 【常用短语】①public virtue 公德 ②make a virtue of necessity 把非做不可的事装成出于好心才做的 ③of easy virtue 不贞节的，水性扬花的