nail down

用钉子钉住, 确定

例句与用法：

He had a hard time selling his car, but he finally nailed down the sale when he got his friend John to give him$500.

他原先卖不掉他的汽车，但他的朋友约翰给了他500美元，终于把这宗买卖定了下来。

He told us that he had lost the money but we nailed down that he had lied by proving he had spent it.

他对我们说他丢了钱，但是我们证实是他把钱花了，从而确定他是说谎。

It take the negotiator ten hours to nail down a deal.

参加协商的人花了十个小时才敲定一桩生意。

词形变化：

名词: nailer | 动词过去式: nailed | 动词过去分词: nailed | 动词现在分词: nailing | 动词第三人称单数: nails |

详细释义：

1. 用钉子固定

She nailed down the corners of the carpet.

他用钉子把地毯的四角固定住。

2. 确定

It took the negotiators ten hours to nail down a deal.

参加协商的人花了十个小时才敲定一桩生意。

We should sign a contract with them to nail down their agreement.

我们应该与他们签订合同, 把协议确定下来。