approve of 赞成，满意
arm in arm 手挽手地
under arms 在备战状态中
up in arms 起来进行武装斗争
arrive at 到达（某地）
as a rule 通常，一般（说来）
as…as…象，如同，与…一样
not as…as… 不如…那样
as for as 就…而论，据…
as for 至于，就…方面说
as good as 几乎（实际）已经
as if 好象，仿佛
as long as 只要
as to 至于，关于
as well 也，又
as well as （除…之外）也，既…又
may as well 还是…的好
aside from （美）除…以外
ask after 询问，问候
ask for 请求，要求，寻求
assist in 帮助（做某事）
assist sb. with sth. 帮助某人做某事