| 释义 |
an unknown quantity 汉语翻译未知量, 难预测的事 例句：- The new teacher is still very much an unknown quantity but we have hopes that he will be a valuable member of our team.
新教师是谁现在还难以预料，但我们希望他会成为我们队里的重要一员。 - The new sales director is still a bit of an unknown quantity.
新来的销售部主任大家还不大了解。
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