单词：nail down
[法] 束缚, 确定, 使成定案
nail down的用法和样例：
例句
- The cover of the box was nailed down.箱盖用钉子钉住了。
- You must pin down every quotation to its author.你一定要确定每一个引文的作者是谁。
- You should nail down the agreement in October.你应在十月份就把协定确定下来。
词汇搭配
- nail down用钉子钉住
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