6、预防流感。be preparedagainst war and naturaldisasters备战备荒7air空气,天空1、发表(意见等)airone's views发表意见使通风,使通气Sheairedtheroombyopening the window.她打开窗子使房间通风。个人收集整理勿做商业用途8allow允许,准许给予;使得到allowedhim£1000 for expenses给他每年1000 英镑的开销容许(of)allowofnoexcuse不容辩解Thesituation