bullhorn

1. 扬声器；喇叭筒
   A bullhorn is a device for making your voice sound louder in the open air.

in BRIT, use 英国英语用 loudhailer, megaphone.

1. The Internet, many people thought, would do away with that notion because it connects more heterogeneous people and gives even minority voices a bullhorn.
   许多人认为，互联网会让这个概念彻底消失，因为它让更加相异的人们联系在一起，甚至还能传播少数群体的声音。
2. It was another day of bullhorn diplomacy by Iran's top nuclear officials, who appear to be struggling to halt momentum for a new round of international sanctions.
   这又是伊朗高级核事务官员显示强硬外交态度的一天，他们似乎在竭力阻止新一轮国际制裁的趋势。
3. The bullhorn acacia is not a tree of the dark windless depths of the tropical rain-forest.
   牛角相思树不喜欢在阴暗不透风茂密的热带林区中生长。
4. The bullhorn Acacia has serious competition.
   牛角相思树面临着严峻的挑战。
5. The only way he could have made what he was saying any louder would be with a bullhorn.
   若让他说那些话时声音再大一点儿，他唯一可用的方法就是用手提扩音器了。
6. "I apologize to you all," said Wen, using a bullhorn to address stranded travelers at a train station in Hunan province.
   “我向你们所有人道歉”在湖南省的一个火车站，温，用扩音器发表讲话说。
7. In the past, South Korean navy ships had been required to fire warning shots after simply issuing a verbal warning by bullhorn to any North Korean boats crossing the sea border.
   此前，南韩军舰受命在用喇叭发出简单的口头警告后，对所有越过海上分界线的北韩船只进行炮火警告。
8. Because he liked the stereotype of the principal in the movie, walking in the halls with a baseball bat and a bullhorn.
   这是因为他喜欢电影里那位一手拿着棒球棒，一手拿着扩音器在走廊里走来走去的校长的形象。

noun

1. a portable loudspeaker with built-in microphone and amplifier

   Synonym:    loud hailerloud-hailer