harbinger/ˈhɑ:bɪndʒə(r); `hɑrbɪndʒɚ/ n~ (of sb/sth) (rhet 修辞) person or thing that announces or shows that sb/sth is coming 预告者; 先驱; 前兆 The crowing of the cock is a harbinger of dawn. 鸡啼报晓. The cuckoo is a harbinger of spring. 布谷鸟预告春天的来临.
牛津英汉双解词典