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在震中区，纵波使地面上下颠动。
In Zhenzhong Qu, longitudinal wave to the ground moving from top to bottom Britain.
youdao
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她把孩子放在膝盖上颠动。
She bounced the baby on her knee.
youdao
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颠动着婴儿，哄他不再哭。
He dandled the baby to make him stop crying.
youdao
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颠动着婴儿，哄他不再哭。
He dandled the baby to make him stop crying.
youdao