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更新日期:2026-08-14
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。