单词：round off
完成, 把...修圆磨光
[电] 结束
[电] 结束
round off的用法和样例：
例句
- They rounded off the evening by singing a song.他们唱了一首歌，圆满结束了这个晚会。
- The performance was rounded off with group-singing.演出在合唱声中圆满结束。
- He made the 90-mile round trip in one hour.他一个小时完成了九十英里的来回旅程。
- Have you done all this work off your own bat?这些工作都是你独立完成的吗？
词汇搭配
- round off（使）圆满结束...