rounding off

动词 round off:

1. make round
   同义词：round, round out, round off
2. bring to a highly developed, finished, or refined state
   同义词：polish, round, round off, polish up, brush up
3. express as a round number
   同义词：round off, round down, round out, round

1. He rounded off his short speech by thanking everyone who had assisted him.
   他对帮助过他的每个人表示了谢意，以此结束了他简短的讲话。
2. She rounded off the corners of the table with sandpaper.
   她用砂纸把桌角打磨光了。