stumble没有词根
The naughty boy almost stumbled.
那个淘气的男孩差点绊倒。
He bruised his knee in a stumble.
他绊了一跤把膝盖摔伤了。
He stumbled over what had happened.
他支支吾吾地说着事情的经过。
The child stumbled and fell.
孩子绊了一下 摔倒了。
I hope you don't stumble over any event during the holiday.
我希望您不要绊倒在假期中的任何事件上。
