on completion

• 结束时

on completion的用法和样例：

例句

1. I'll wind the film on to the exciting bit near the end.
   我来把片子转到快结束时的有刺激性的部分。
2. By the end of the number they were all finally playing on the beat.
   乐曲快结束时，他们终于都演奏合拍了。