23. live a happy life　 live a simple life 过简单生活　 live a single life　 　come to life

22. tell lies 说谎　　　　　 lie in 在于　 lie down　 躺下　　

21. licence　　 执照　　　 a driving licence　　 We have a licence to sell beer.

20. liberate 解放　　 liberate people from poverty　

19. let sb alone to do 让…单独干…　　　 let alone 更不用说，何况　 He can’t walk, let alone run.　 let sb down 使…沮丧　　 let sb off 饶恕, 放过…　　 let out 放出；漏泄

18. Let that be a lesson to you.让那次成为你的教训。　 take/draw a lesson from 从…吸取教训　　　

17. in length　 在长度上　　　　　 at length = in detail　 详细的

16. legal 合法的　　 take legal action ， 　the legal age for driving

15. leave 离开 　　lock the door when you leave.　 leave sp 离开…　 leave for sp 离开去…　　　　　　 leave sb doing sth　 Please don't leave them waiting too long.　 leave the door open 让门开着　　　　

leave alone 让某人独自呆着，不干扰　 They left the poor child alone in the house all night.

leave behind 遗忘，留下，不带　　 He has left his umbrella left.　

leave out 省略　 You have left out a word in that sentence.

be on leave 度假　　　　 ask for leave　　 请假

14. learn　 学习　　 learn to do 　learn sth　 Never too old to learn.(谚)活到老，学到老。

　　　 　Learn of sth ,　 learn that… 　　　　learn from