5月8日每日单词
1. at no time 从不，决不
2. at the cost of 以...为代价
3. at the mercy of 任凭...摆布
4. at this rate 照此速度
5. at times 有时，不时，间或
6. attach importance to = pay/call attention to 关注，重视
7. attach to 附属于，隶属于；使依恋，使喜爱
8. attempt at 尝试，企图
9. attention to 对...的主意
10. attitude to/towards 态度，看法
