They like to hear the music of a smooth voice and so on.

婴儿们喜欢听到拥有平缓声音的音乐等等

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Harbin-born Li has a clear and smooth voice, which he inherited from his Peking Opera singer father.

李健出生于哈尔滨，从京剧演员父亲那里继承了一副干净、悦耳的嗓音。

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“Natural” and “effortless” were the words most often applied to that smooth, honeyed, gorgeous voice, which made skin break out in goose-bumps and raised thehairs on the back of the neck.

“自然而然”和“毫不费力”是用在他那些圆润甜美、富丽堂皇的嗓音上最经常的词语，而那些音调既能使人浑身起鸡皮疙瘩又让人寒毛直竖。

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They like to hear the music of a smooth voice and so on.

婴儿们喜欢听到拥有平缓声音的音乐等等

耶鲁公开课 - 心理学导论课程节选

His buttery smooth TV baritone voice comes by way of his nightly dip into Cuban cigars.

FORBES: Inside Forbes on Fox

It's sort of this velvety, smooth, world-weary voice that seems to be untouched by time.

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His surface is so smooth, his movements so easy and fluid, his voice so consistent and well-pitched that he can seem like an actor playing a politician, too implausibly effortless to be doing it for real.

NEWYORKER: The Conciliator