1、 It is as if a singleunimportant event set up a chain of reactions. 好像是一件无关紧要的小事引起了一连串的连锁反应。 2、 The telephone rings and this marks the prelude to an unforeseen series ofcatastrophes. 它预示着一连串意想不到的灾难的来临。 3、 She suddenly got into a panic and stopped her car. 她一惊之下突然把车停了下来 panic 惊慌而且是可数名词。