n.电子喇叭，扩音器

原形：loudhailer复数：loudhailers

The politician used a loudhailer to address the crowd from the back of the truck.
这位政治家用扩音器从卡车后面向人群发表讲话。
The police officer used a loudhailer to issue a warning to the protesters.
警察使用扩音器向抗议者发出警告。
The rock band used a loudhailer to announce their next song to the audience.
这支摇滚乐队使用扩音器向观众宣布他们下一支歌曲。
The coach used a loudhailer to give instructions to the players on the field.
教练使用扩音器向场上的球员发出指令。
The teacher used a loudhailer to call roll during the school assembly.
老师在学校的集会上使用扩音器点名。
The emergency services used a loudhailer to warn residents of an impending disaster.
应急服务部门使用扩音器警告居民即将发生的灾难。
The street vendor used a loudhailer to advertise his goods to passersby.
街头小贩使用扩音器向路人宣传他的商品。
The military used a loudhailer to communicate orders to troops in the field.
军队使用扩音器向野外部队传达命令。
The activist used a loudhailer to rally support for her cause among the crowd.
活动人士使用扩音器在人群中为她的事业争取支持。
The construction crew used a loudhailer to alert workers of potential hazards on the job site.
建筑工人使用扩音器提醒工人们工作现场可能存在的危险。