seriousnessBrE /ˈsɪəriəsnəs/ NAmE /ˈsɪr-/ ●in all ˈseriousnessseriously; not jokingly非常严肃地;说实在的◆Surely you’re not telling me, in all seriousness, that you want to work in a factory for the rest of your life! 你当真是说你愿意一辈子都在工厂干下去,不是开玩笑吧!OPP(with) tongue in cheek