- hardly a day几乎一天
- a bad applen. 坏蛋;
- attribute set表征组;
- at the drop of a hat毫不迟疑地，一有机会就;动不动;
- at a time依次， 逐一， 每次;
- at a stroke一下子;
- at a stretchadv.一口气地;一气;
- at a standstill停止，停顿;
- at a speed of以…的速度;
- at a runadv.跑着;
- at a rate of以…速度;
- at a price以相当高的价格;
- at a premium非常珍贵， 非常需要， 渴求;
- at a pinch必要时，如果有必要;
- at a low ebbadv.衰败;
- At a low在低谷
- at a loss不知所措;亏本;困惑;神思恍惚;
- at a loose endadv.闲着;没有事做;闲散;
- at a guess猜一下，粗略估计;
- at a good paceadv.相当快地;
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