on the button
成語所屬單字button
on the button — 慣用語
1. Exactly at the correct time or exactly as stated.
1.慣用語
釋義
準確地；正好
Exactly at the correct time or exactly as stated.
例句
The train arrived at 9:00 on the button.
Your guess was right on the button; it's exactly 50 dollars.
2. exactly correct, or happening at exactly the right time, with no delay.
2.慣用語
釋義
分毫不差；正中要點
exactly correct, or happening at exactly the right time, with no delay.
例句
The train pulled into the station at six on the button.
Lina's guess about the answer was right on the button.