| 词汇 | nail down |
| 释义 | nail down [phrasal verb] 1 nail (something) down or nail down (something) : to make (something, such as a victory) certain to happen确保（胜利等） They need to score another touchdown to nail down the victory.他们需要再来一个达阵才能稳操胜券。 2 : to find out or identify (something) exactly查明，敲定（某事物） Her doctors haven't yet been able to nail down a diagnosis.她的医生还不能确诊。 They're trying to nail down the cause of our network problems.他们正在努力查明我们网络故障的原因。 3 : to make (something) definite or final确定 nail down a decision明确地做出决定 nail |
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