mark off

名词 mark off:

1. Russian mathematician (1856-1922)
   同义词：Markov, Andrei Markov, Markoff, Andre Markoff

动词 mark off:

1. set boundaries to and delimit
   同义词：mark out
2. put a check mark on or near or next to
   同义词：check, check off, mark, tick off, tick

1. She wiped the dirty marks off.
   她把脏痕迹擦掉了。
2. The boundaries are clearly marked off on the map.
   边界的划分在地图上标得很清楚。