| 单词 | help key |
| 释义 | help keynoun Computing A button on a mobile phone, computer keyboard, or other electronic device that, when pressed, gives assistance to the user in the form of displayed instructions: I pressed the help key in my menu...
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英语词典包含243303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。