mark something/someone off
phrasal verb with mark verb uk/mɑːk/ us/mɑːrk/
（从表中）勾去，划掉（表示已处理过）
If you mark off things or people that are on a list, you record that you have dealt with them.
As I complete each task I mark it off. 我每做完一项工作，就将它划掉。