耳套

例句：

1. 1. I need to wear an earplug when I listen to music in the car.
   我需要戴上耳塞在车里听音乐。
2. 2. The headphones are too tight for my ears, so I bought a new earphone sleeve.
   耳机太紧了，所以我买了一个新的耳套。
3. 3. The musician used a custom-made earplug to protect his hearing during the concert.
   这位音乐家在音乐会上使用了定制的耳塞来保护他的听力。