“难住”的英语可以翻译为：pose，stump ...

我承认我一度被难住了。I admit I was foxed for some time.她紧张地咽了一下, 似乎那问题把她难住了.She gulped nervously, as if the question bothered her.她有几次觉得简直就被那几个问题给难住了.She had nearly found herself caught out several times on those problems....