- at the top在顶端
- at the present time目前;时至今日;
- at the momentadv.当时;此刻，现在，目前;
- at that moment在那个瞬间;
- at short notice立即，仓促;
- at lunch午餐的时候
- at lowestadv.至少;
- at long last终于;经过很多苦恼或麻烦之后;总算;算;
- at full stretchadv.非常紧张;
- at full blast全力地; 全速地;完全;极度;
- at alladv.根本;简直;毫;
- at a stretchadv.一口气地;一气;
- at a loss不知所措;亏本;困惑;神思恍惚;
- at a guess猜一下，粗略估计;
- advanced age老年;高龄;
- burn the candle at both endsv.过分耗费;劳累过度;
- beam at光束在
- be at issue有问题
- be annoyed at被（某事）烦扰;
- come of age到了成年;长大成人;年及弱冠;
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