grate upon的用法和樣例：
例句
- Thrill-seekers descended upon the scene of the crime.
尋求刺激者急速接近犯罪現場。 - Upon realizing that she and Guang Wan have been conned by the estate agent, Yun Zhi passes out on the spot.
允智發覺他們已經受騙，結果因受不了刺激而當場昏倒。
辭彙搭配
- grate upon the ear 叫人聽起來不愉快...
