stumblev.绊倒；蹒跚；犯错误；无意中发现n.绊倒；错误stumble on the threshold刚一着手就搞糟了stumble at the threshold刚一着手就搞糟了stumble around in the dark在黑暗中瞎闯Stumbled over a tree root.树根绊了我一脚。Stumble He tripped and fell.百家(姓,日本)Stumbled but regained his balance.他绊了一下但又马上回复了平衡。

stumble at the threshold刚一着手就搞糟了