stumbling

adj.

摇摇晃晃或跌跌撞撞的；

v.

（不顺畅地）说( stumble的现在分词 )；跌跌撞撞地走；绊脚；（说话、演奏等）出错

stumbling block绊脚石；障碍

1. It's a good plan, but the opposition of the local people may be a stumbling block.
   这是一个好计划，不过当地人的反对可能成为一大障碍。

Hip joint contact forces during stumbling
Stumbling corrective reaction: a phase-dependent compensatory reaction during locomotion
Stumbling reactions in man: significance of proprioceptive and pre-programmed mechanisms
Teacher Certification Reconsidered: Stumbling for Quality. A Rejoinder.
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Foundations or Stumbling Stones for a Science of Personality?. (Books on Science for Laymen: Foundations for a Science of Personality)
Preferential Trade Agreements as Stumbling Blocks for Multilateral Trade Liberalization: Evidence for the United States
Autism and the extraction of emotion from briefly presented facial expressions: Stumbling at the first step of empathy.
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