by default

成語所屬單字default

by default — 慣用語

1. When something happens because no one else is available or no other option is ch

1.慣用語
釋義

因無人競爭而自動獲得

When something happens because no one else is available or no other option is chosen.

例句

Sara won the race by default after the other runner was injured.

Did Brian become team captain by default when no one else wanted the job?