47. stick to one's last---唐朝大画家载嵩以画牛知名，可是，《东坡题跋》卷五却记载了宋朝一位牧童对载嵩一幅斗牛图的批评∶“牛斗力在角，尾搐(夹)入两股间；今乃掉尾(翘起尾巴)而斗，谬矣!”这位牧童对牛的认识比载嵩深，当然有资格批评了。古希腊名画家阿佩利斯(Apelles)画的一幅人像，也遭到一名鞋匠批评，说鞋带画得不对，阿佩利斯依言改正了。可是，那鞋匠不知高低，跟着又批评人像双脚画得不好；阿佩利斯于是对他说∶“你只管自己本行好了－－鞋子的一切你是认识的，解剖学却不是你懂得的了。这就是英文成语a cobbler should stick to his last(鞋匠不应离开鞋楦)或stick to one's last的来源了。Last这里不解作“最后”，而是指做鞋子模型的木楦。人们现在一般用这成语来说“守自己本分”或“不要多管闲事”【Now stick to your last and don't tell me how to do my work.】

46. put sth. on the back burner---talk about sth. later【A: You know, I've been thinking about time travel again. B: Did you hit a roadblock with invisibility? A: Put it on the back burner. Let's talk about this first.】

45. strictly from hunger---一個人或一樣東西質量很差，但是由於沒有其他選擇而被迫接受了【My sister told me the music was good but the guys there were strictly from hunger.】

44. bait and switch---a trick【The ad claimed the shop was selling the videos at a price so low it was hard to believe. So I hurried there but it was a case of bait and switch - the clerk said the cheap ones were all sold out and he tried to sell me other videos at a much higher price.】