stumble/ˋstʌmbḷ; ˈstʌmb$l/v [I] 1 to almost fall while you are walking 绊脚﹐绊跌: +over/on Vic stumbled over the step as he came in. 维克进来时在台阶上绊了一下。see box at见 FALL1 方框2 to stop or make a mistake when you are speaking〔说话时〕结巴﹐说错: +over I hope I don’t stumble over any of the long words. 希望我说那些长单词不会结结巴巴。 stumble on/across sb/sthphr v to find something or someone by chance 偶然发现﹐偶然碰到: While clearing out a cupboard, she stumbled across one of her old diaries. 清理橱柜的时候﹐她偶然发现了自己的一本旧日记。