| 短语 | the unknown |
| 释义 | the unknowna. a place that is not known about or that has not been visited by humans不为人知（人类尚未到达）的地方:•The astronauts began their journey into the unknown.宇航员开始了对未知世界的探索之旅。b. things that you do not know or understand未知事物:•a fear of the unknown对未知事物的恐惧 |
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