| 单词 | the frontier |
| 释义 | the frontier the frontier → the frontier at frontier(1) an area where people have never lived before, that not much is known about, especially in the western US before the 20th centurythe frontier |
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初中学习网英汉双解词典包含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。