Definition
to indicate on a list that items or names have been verified or completed
勾选（清单上的项目）
I checked them off the list when I finished all my assignments.
当我完成所有作业时，我将它们从清单上勾选掉。
I check each item off the list as I prepare for the trip.
我在为旅行做准备时，将清单上的每个项目都勾选掉。
The manager asked us to verify each account and check them off the list.
经理要求我们核实每个账户并将它们从清单上勾选掉。