| 短语 | nail sb↔down (to sth) |
| 释义 | ˌnail sb↔ˈdown (to sth)to force sb to give you a definite promise or tell you exactly what they intend to do迫使明确保证（或准确说出想做之事）pin downShe says she'll come, but I can't nail her down to a specific time.她说要来，但我无法让她敲定具体什么时候来。 |
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