touch up

动词 touch up:

1. alter so as to produce a more desirable appearance
   同义词：retouch

1. One could see that the painting had been touched up in several places.
   人们可以看出，这张画有几个地方是经过润色的。
2. The speech he gave had been touched up by his staff.
   他的报告经过他办公室人员的润色。
3. He asked the teacher to touch up his picture.
   他请老师把他的画修改提高一下。