on the button
英 [ɒn ðə ˈbʌtn]
美 [ɑːn ðə ˈbʌtn]
在下巴尖上; 准确地
英英释义
adj
- being precise with regard to a prescribed or specified criterion
- his guess was on the nose
- the prediction for snow was right on the button
adv
- just as it should be
- `Precisely, my lord,' he said