形容词
中文翻译：未被听到的
同义词：
['unseen', 'unnoticed', 'unheard-of例句：1. The news of the new invention was unheard by most people.（这个新发明的消息大多数人没有听到。）']
例句：
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1. The news of the new invention was unheard by most people.
这个新发明的消息大多数人没有听到。
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2. The scientist's theory was unheard by many until it was proven correct.
科学家的理论直到被证明正确之前，很多人都没听到过。
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3. The story of the lost explorer was unheard in his own time.
那个失落的探险家的故事在他生前无人知晓。