stumble /ˈstʌmbl/ vi. 1.绊脚，绊倒：stumble down 绊倒；stumble over/on a stone 给石头绊倒 2.跌跌撞撞地走：We stumbled along the broken path, fearful of tripping up. 我们在一条凹凸不平的小道上踉踉跄跄，生怕跌倒。 3.结结巴巴地诵读(或说话)：stumble over one’s words 结结巴巴地说话 stumble across/on… 偶然遇到：stumble upon an evidence 偶然找到一个证据