bull-roarer

例句：

1. 1. The bull-roarer was a popular attraction at the carnival.
   在嘉年华上，公牛号角手是一个受欢迎的景点。
2. 2. He was known as the bull-roarer because he always had something to say.
   他以吹牛者闻名，因为他总是有话要说。
3. 3. The bull-roarer was a symbol of the carnival's excitement and energy.
   公牛号角手是嘉年华兴奋和活力的象征。