| 单词 | extra- |
| 释义 | extra- [ek.strə-] prefix ■outside or in addition to 在…之外；超出；越出 •extraterrestrial beings (= imaginary creatures which come from outside the planet Earth)外星人 •an extramarital affair (= a sexual relationship of a married person with someone other than their husband or wife)婚外情 •extracurricular activities (= activities which are not part of the usual school or college course)课外活动 |
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101BT英语在线翻译词典收录了36528条英语词汇在线翻译词条，基本涵盖了全部常用英语词汇的中英文双语翻译及用法，是英语学习的有利工具。