f(=keepsecret)不告诉别人422.to(thebestof)one’sknowledge据…所知423.atlarge(=atliberty,free)在逃,逍遥法外atlarge(=ingeneral)一般来说,大体上;atlarge(=atfulllength;withdetails)详细地424.leanagainst(背)靠着…425.atleast至少;atmost至多426.(not)intheleast一点(也不),丝毫(也不)427.atone’sleisure在…有空的时候428.lenditself/themselvesto适合于(某用途)429.atlength(=afteralongtime,atlast)终于;atlength(=indetail,thoroughly)详细地430.gotoanylength想一切办法,尽一切力量431.beliableto(=besubjectto)易于..的,应受(罚)432.beliablefor对…应负责任的433.liein在于434.inlife一生中435.forlife终身436.inthelightof(=considering;ount)考虑到,根据437.throwlighton(=makeclear,explain)使…更为清楚,提供线索,阐明438.inlinewith(=inagreementwith)符合,一致439.longfor(=wantverymuch)渴望,希望得到440.forlong很久,很长时间(否定句.疑问句中)441.beforelong(=soon)不久,过了不久以后.442.inthelongrun(=intheend)从长远来说,最后;intheshortterm(从短期来说)443.(be)ataloss不知所措444.majorin主修(某课程