at
at a loss 困惑不解,茫然不知所措
at all (用于否定句)丝毫(不),一点(不)
at all costs 不惜任何代价,无论如何
at all events 不管怎样,无论如何
at any rate 无论如何,至少
at best 充其量,至多
at ease 舒适(地),安逸(地)
at first 最初,起初
at hand 近在手边,在附近
at large 详尽的,普遍的;未被获取的
at last 终于,最后
at least 至少