agent aggravate aggressive agitate ago agony agree agreeable agreement agriculture ahead aid aim air airconditioning aircraft airline airport aisle alaim album alcohol alert alien alike alive all allege alleviate alliance
alleviate减轻 缓和 缓解
allege断言宣称指控
alike同样的 同程度的一样地
aisle过道 通道
airconditioning空调系统
alert机警的 机灵的 使某某警觉