名词
中文翻译：Unknown
同义词：
['murmuring', 'murmuring', 'murmur']
例句：
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2.
声音
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3.
声音
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1. The old man was mumbling to himself in his sleep.
老人在睡梦中低声自语。
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2. She whispered a secret to her friend.
她对朋友小声说了一个秘密。
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3. The wind was murmuring through the trees.
风吹过树丛，发出低语声。