| 单词 | under lock and key |
| 释义 | under lock and keyunder lock and keyunder lock and keyunder lock and keysecurely locked up.under ˌlock and ˈkeylocked up in prison, in a safe, etc: The escaped prisoners are now safely under lock and key. ♢ The exam papers must be kept under lock and key until half an hour before the exam.under lock and key |
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英语词典包含2567994条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。