touch up

US /tʌtʃ ʌp/
UK /tʌtʃ ʌp/
"touch up" picture
1.

修补, 润色, 改进

to improve something by making small changes or additions

:
I need to touch up the paint on the wall where it chipped.
我需要修补墙上掉漆的地方。
She spent an hour touching up her makeup before the party.
她在派对前花了一个小时补妆