431.be liable to(=be subject to)易于..的，应受(罚)
432.be liable for 对…应负责任的
433.lie in 在 于
434.in life 一生中
435.for life 终 身
436.in the light of(=considering;taking into account)考虑到，根据
437.throw light on(=make clear，explain)使…更为清楚，提供线索，阐明
438.in line with(=in agreement with)符合，一致
439.long for(=want very much)渴望，希望得到
440.for long 很久，很长时间(否定句.疑问句中)
441.before long(=soon)不久，过了不久以后.
442.in the long run(=in the end)从长远来说，最后;in the short term 从短期来说
443.(be)at a loss 不知所措
444.major in 主修(某课程)
445.as a matter of fact 实际上，事实是
446.by all means(=at all costs)不惜一切;(=certainly)当然行;by means of 用…;by no means 完全不，决不
447.on memory of 为纪念…
448.on the mend(=in the process of recovering)好转，在康复中
449.mention sth. to sb. 向某人提起某事
450.at the mercy of(=in the power of)任…摆布，在…支配下
