check up on sb
监督;督促
to make sure that sb is doing what they should be doing
My parents are always checking up on me.我父母总是督促我。
check up on sth
查证;核实
to find out if sth is true or correct
I need to check up on a few things before I can decide.我得核实几件事情才能作决定。
释义来自《牛津高阶英汉双解词典》第 9 版