A

a matter of time 时间问题

around the clock整天不断

as far as I know 据我所

a while back 不久以前

all along一直，始终

anything but 绝对不

at any time随时

Achiless’heel 致命弱点

a rainy day不如意的日子

all thumbs 笨手笨脚的

ants in one’s pants/shirts坐立不安

a breeze小菜一碟

at no charge免费

all tied up工作很忙

as a matter of fact事实上

a long way off还差得远呢

a big fish in a small pond小地方的大人物

at somebody’s service愿意为某人效劳