check-up

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

It is certainly worth checking up on your benefit entitlements. 调查一下你的福利权益无疑是值得的。

2. →see also checkup

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

I'm sure he knew I was checking up on him. 我确信他知道我在私底下调查他。