nail down
US /neɪl daʊn/
UK /neɪl daʊn/
短语动词
1.
2.
迫使明确, 迫使做决定
to force someone to be specific or to make a decision
示例:
•
The lawyer tried to nail down the witness on the exact time of the incident.
律师试图迫使证人说出事件发生的准确时间。
•
It's hard to nail him down on a commitment.
很难让他做出承诺。