stumped
v.
僵直地行走，跺步行走( stump的过去式和过去分词 );
把（某人）难住;
使为难;
（选举前）在某一地区作政治性巡回演说;
例句:
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The Marshal stepped over the vacuum-cleaner and stumped out of the room.
元帅迈过真空吸尘器，脚步沉重地走出了房间。
来自柯林斯例句
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Well, maybe I stumped you on that one.
好吧，也许我在那件事上使你为难了。
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John is stumped by an unexpected question.
一个意想不到的问题把约翰难住了。
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I just accidently stumped on a few days ago.
来自SA
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Barcodes that were too small or not well lit stumped the app.
来自WSJ
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But sometimes officials there are stumped.
来自VOA