难以置信在英语中可以翻译为"unbelievable"。该词来源于拉丁语，意思是"不可信"，含有"not"和"believe"两个词的意思。例句：

It's unbelievable that he won the lottery twice in a row. (他竟然两次连续中彩票，真是难以置信。)

She has an unbelievable talent for singing. (她拥有令人难以置信的歌唱天赋。)

The story he told me was so unbelievable that I didn't believe a word of it. (他告诉我的故事太难以置信了，我一句也不信。)

在英语中，还有一些其他的词可以用来表示难以置信的意思，例如incredible、amazing和astounding等。