Tomorrow without fail he would be at the old riverside warehouse.明天他一定会在河边的旧仓库里。I will give you a present on your birthday without fail.你生日时我一定送你一份礼物.I'll pay you tomorrow without fail.我明天付款给你,决不迟误....

必定，一定...

without fail的音标：without fail的英式发音音标为：[wi'ðaut feil]without fail的美式发音音标为：[wɪð'aʊt fel]...