stumble over

基本解释

You stumble over your words. You flub a tough question.
可怕的沉默、你说话结结巴巴、你无法回答一个特别困难的问题。
Plus, the handy pronunciation tool will make sure you never stumble over “Ahmadinejad” again!
另外，超方便的发声工具将会确保您再也不会结结巴巴的说出“艾哈迈德内贾德”！
Two principles: one, don't stumble over peanuts; two, everything is a peanut.
两个原则：不要纠缠于小事；二、任何事都是小事。
blog.sina.com.cn

This turns out to be a euphemism for a ten-minute stumble over broken pavements, through the traffic fumes of south London.
ECONOMIST: The Tate Modern
Turmoil at the top of Morgan Stanley has energized an already strong hiring market, as recruiting firms stumble over each other to lure senior bankers and specialists to rival firms.
FORBES: Wall Street's Hiring Spree
Vivendi's shares have fallen 7% since the news leaked out, Seagram's stock trades at 26% below the offering price, and reporters stumble over themselves to chortle at Vivendi's star-crossed ambitions.
FORBES: Goodwill For All