stumbles
v.
（不顺畅地）说( stumble的第三人称单数 );
跌跌撞撞地走;
绊脚;
（说话、演奏等）出错;
例句:
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Why does one virtual team thrive while another stumbles?
来自WSJ
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Adam stumbles on, leaving a trail of devastation in his wake.
亚当蹒跚而行，沿路留下毁坏的痕迹。
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Mary often stumbles in her speech.
玛丽常常结结巴巴地讲话.
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Jastrow stares in a stunned way at the still audience, then stumbles toward the first row.
杰斯罗用惊呆了的神气瞪眼望着鸦雀无声的听众, 然后趔趔趄趄地朝着第一排听众走过去.
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Sophia stumbles into a penis being licked by a dog.
来自FORBES
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"Oliver Twist" stumbles, and the obstacle is Fagin.
来自NEWYORKER