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Fitness undulated in the face of people happy smile.
健身的人们脸上荡漾着快乐的笑容。
youdao
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The sound of the exhaust jet was very loud, and undulated slightly.
的声音，排气射流是非常响亮，并略有起伏。
youdao
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The sound of the exhaust jet was very loud, and undulated slightly.
的声音，排气射流是非常响亮，并略有起伏。
youdao