bullhorn

例句：

1. 1.The police used a bullhorn to disperse the crowd.
   警方使用喇叭驱散人群。
2. 2.He was so loud that he could be heard from miles away.
   他的声音如此之大，以至于在几英里外都能听到。
3. 3.The announcer held up a bullhorn and shouted the results.
   播音员举起喇叭大声宣布结果。