副词
中文翻译：无声地
同义词：
['inaudibly', 'silently']
例句：
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1.She spoke inaudibly to the audience.
她对观众说话时声音很轻。
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2.The movie was so good that you couldn't hear it if you were inaudibly listening.
电影太棒了，你几乎听不见它的声音。
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3. The sound of the waves inaudibly washed over her.
海浪的声音轻轻地拍打着她。