单词hailer
n.: 欢呼者；打招呼者；(海军船舰等上的)手提扩音器
网络: 汽笛；高声信号器
电笛
汽笛
〔电信〕高声信号器;〔交〕汽〔电〕笛
(海军船舰等上的)手提扩音器
欢呼者;打招呼者
TWO elderly men in baseball caps have been touring Taipei"s government district this week with a loud-hailer.
本周，有两位上了年纪、头顶棒球帽的男人在台北总统府一带举着扩音器驾车兜圈。
Can you hear what the man with the loud-hailer is saying? I can"t makeit out at all.
你听得出那个拿着电喇叭的人在说什么吗？我一点也听不清楚。
Research on the Problem of Freezing Damage for Hailer Type Air-cooling System
海勒式空冷系统防冻害问题之研究