1.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。
2.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。
3.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