1. keep…to oneself(=keep secret)不告诉别人

2. to(the best of) one’s knowledge 据…所知

3. at large(=at liberty, free) 在逃, 逍遥法外 at large(=in general) 一般来说, 大体上 ;at large(=at full length; with details)详细地

4. lean against (背)靠着…

5. at least 至少; at most 至多

6. (not) in the least 一点(也不), 丝毫(也不)

7. at one’s leisure 在…有空的时候

8. lend itself/themselves to适合于(某用途)

9. at length (=after a long time, at last)终于;at length (=in detail, thoroughly)详细地

10. go to any length想一切办法, 尽一切力量

11. be liable to (=be subject to)易于..的,应受(罚)

12. be liable for 对…应负责任的

13. lie in 在于

14. in life 一生中

15. for life 终身

16. in the light of (=considering; taking into account) 考虑到, 根据

17. throw light on ( = make clear, explain) 使…更为清楚, 提供线索, 阐明

18. in line with(=in agreement with)符合,一致

19. long for(=want very much)渴望,希望得到

20. for long 很久,很长时间(否定句.疑问句中)

21. before long (=soon)不久, 过了不久以后.

22. in the long run (=in the end)从长远来说,最后; in the short term (从短期来说)

23. (be) at a loss 不知所措

24.major in 主修(某课程)