sharpadj.锋利的；突然的；灵敏的；明显的；辛辣的；【音】升音阶的adv.准时地；突然地；偏高地sharp loss[经] 剧跌的态势sharp line锐谱线；清晰界限sharp fall激跌sharp tone刺耳的调子sharpstone尖角石sharp null窄哑点sharp yield明显屈服sharpwittedadj.机智的(灵敏的)sharp razor锋利的刮胡刀sharp crack尖裂缝

1. Please be on hand at12: 30 sharp.
   请在12点30分准时在席。
2. I/We will be at the10 Baker Street at six sharp, and look forward to seeing you.
   我(们)将于晚六点准时到达贝克大街10号，到时再会。
3. His brother is sharp as a tack; he got100 on every test.
   他弟弟十分聪明伶俐，每次考试都得100分。
4. The time now is 10:00 p, m, sharp.
   现在的时间是晚上10点整。