| 单词 | θ78454 |
| 释义 | the world > matter > physics > electromagnetic radiation > electronics > electronic devices or components > thermionic valve (92) Subcategories:— [noun] (80) — [adjective] (10) — [verb (intransitive)] (2) |
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英语词典包含1132095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。