实用口语：sharp 的这3个意思很实用

Sharp这3个意思都要知道 

1. We start at 9:30 sharp. Don't be late! 我们9点30整开始，别迟到。

2. I get this sharp pain in my shoulder whenever I raise my arm. 我一抬手臂，肩膀就一阵刺痛。

3. Anita's great to work with. She's so sharp!  跟安妮塔一起工作很棒。她非常聪明。