柯林斯词典loudhailer /ˌlaʊdˈheɪlə/ (also loud-hailer) (loudhailers) 1. N-COUNT A loudhailer is a device for making your voice sound louder in the open air. 扩音器[英国英语] A loudhailer blared warnings of a bomb scare. 扩音器大声播报炸弹恐吓的警告。 返回 loud hailer