bullhorn
n. 手提式擴音器
A bullhorn is a device for making your voice sound louder in the open air.
1. a portable loudspeaker with built-in microphone and amplifier
The bullhorn acacia has serious competition.
牛角相思樹面臨著嚴峻的挑戰.
The bullhorn acacia is not a tree of the dark windless depths of the tropical rain - forest.
牛角相思樹不喜歡在陰暗不透風茂密的熱帶林區中生長.