come in useful
成語所屬單字useful
come in useful — 慣用語
1. to prove helpful or convenient at some point, often unexpectedly.
1.慣用語
釋義
派上用場
to prove helpful or convenient at some point, often unexpectedly.
例句
That small pocket knife came in useful when we needed to open a package during the picnic.
The extra blankets will come in useful if the temperature drops at night.