该句表示确信,也可以说 "beyond doubt" "no doubt" 。 1. Without a doubt these theories were all wrong. 毫无疑问这些理论是完全错误的。 2. No doubt I learned a lot from him. 无疑地,我从他身上学到了很多。 3. They convinced me that Harry was, beyond the possibility of doubt, innocent. 他们使我确信哈利毫无疑问是清白的。 A: Who is your favorite music composer? 你最喜欢哪位音乐家? B: I don't have one single favorite, but these days I listen to a lot of Chopin. 我没有最喜欢的一个,但最近我听了不少肖邦。 A: Then you must despise such modern music as rock? 那你一定看不起诸如摇滚一类的现代音乐了? B: Without doubt, rock is trash. 毫无疑问,摇滚乐是糟粕。