今天我们要学的词是 first-ever, first-ever is spelled f-i-r-s-t dash e-v-e-r, first-ever. First-ever 意思是第一次的。Beijing issued its first-ever red alert for smog, urging schools to close and putting restrictions on factories and traffic.北京首次发布雾霾红色预警，敦促学校停课，并对工厂作业和道路交通加以限制。