| 词汇 | on the button |
| 释义 | on the button US, informal 1 : exactly at the specified time准时地 They arrived at noon on the button. [=on the dot, precisely]他们中午12点准时到达。 2 : perfectly accurate准确（地）；精确（地） Your guess was (right) on the button. [=on the nose]你的猜测太准了。 button |
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