| 词汇 | nail something on |
| 释义 | nail something on phrasal verb with nail verb uk/neɪl/ us/neɪl/ UK informal 确保 to make something very certain or definite Australia seem likely to get to the semis, and a win today would nail it on. 澳大利亚看来会进入半决赛，如果今天他们赢了那就板上钉钉了。 |
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