| 单词 | be a past master (at something) |
| 释义 | be a past master (at something) be a past master (at something) → be a past master (at something) at master1(1) to be very good at doing something because you have done it a lotbe a past master (at something) |
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英汉双解词典包含236457条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。