名词
中文翻译：可听声调
同义词：
['audible tone', 'audible sound', 'audible quality']
例句：
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1. The subaudible tone of the music was so soothing that it almost made me fall asleep.
音乐的可听声调如此舒缓，几乎让我昏昏欲睡。
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2. The recording of the speech was subaudible and could be easily heard by all.
演讲录音清晰可辨，所有人都能轻松听到。
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3. The subaudible tone of the voice was so clear that I could understand every word.
声音的可听声调非常清晰，我能够理解每一个词。