double earphone

例句：

1. 1.I'm using a double earphone to listen to music in the car.
   我在车里用双耳耳机听音乐。
2. 2.The double earphones are designed for comfort and convenience.
   这些双耳耳机设计用于舒适和方便。
3. 3. He bought a pair of double earphones as a birthday gift for his friend.
   他买了一副双耳耳机作为生日礼物送给他的一个朋友。