单词 明秋 例句 DEFINITIVE EXAMPLES 权威例句〔signal〕The changing colour of the leaves on the trees is a signal that it will soon be autumn.树叶颜色的改变表明秋天即将来临。剑桥高阶 英语例句辞典收录了559068条英语例句在线翻译词条,基本涵盖了全部常用单词...