keep an eye on something

成語所屬單字eye

keep an eye on something — 慣用語

1. to watch something carefully so that it stays safe or does not get into trouble

1.慣用語
釋義

留意;照看

to watch something carefully so that it stays safe or does not get into trouble

例句

Can you keep an eye on my bag while I go to the restroom?

Walid kept an eye on the soup as it began to boil on the stove.