check-up

1. PHRASAL VERB If you check up on something, you find out information about it. 調查

It is certainly worth checking up on your benefit entitlements. 調查一下你的福利權益無疑是值得的。

2. →see also checkup

3. PHRASAL VERB If you check up on someone, you obtain information about them, usually secretly. (私底下) 調查

I'm sure he knew I was checking up on him. 我確信他知道我在私底下調查他。