- nail down
 - 确定,明确;用钉钉住
 
参考例子
           - 1.The police broke up the window nailed down and rescued the boy from the fire.
 - 警察打碎了用钉子钉死的窗子,救出了大火中的男孩。
 
- 2.Signing the contract will nail down our agreement.
 - 在合同上签字将使我们的协议成为定案。
 
- 3.He stayed another week, trying to nail down train tickets beyond Kuibyshev.
 - 他又呆了一个星期,设法弄到比古比雪夫更远的火车票。
 
英文解释
           - v.
 - 1.succeed in obtaining a position
 - 2.define clearly
 - 3.make final; put the last touches on; put into final form
 
网络释义
               - nail down
 - 用钉钉住; 明确,确定(做法、协议等); 达成协议; 达成协议,做成生意;
 
- nail someone down
 - 敲定;
 
- nail down to
 - 束缚;
 
- definitude nail down
 - 明确;