22-05-23 31. by the skin of your teeth 侥幸成功，勉强做成 I hadnt studied much, but passed the test by the skin of my teeth. 我没怎么学，但侥幸过了，离挂科只差一点点。 32. comfort food （难过或焦虑时食用的）安慰食品，开心食品 Fat and sugar the twin pillars o...