动词
中文翻译：私下说话
同义词：
['speak in hushed tones', 'whisper']
例句：
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1. They often talk in hushed tones when they are alone.
他们独处时经常低声交谈。
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2. She whispered a secret to her best friend.
她对她最好的朋友小声说了一个秘密。
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3. The couple kept their love affair a secret from the world.
这对情侣把他们的恋情保密，不让世界知道。