Earplug
01
耳塞, 护耳器
a small device inserted into the ear canal to protect against noise, water, or other external elements
例子
During the swim meet, the diver used earplugs to prevent water from entering her ears.
在游泳比赛期间,潜水员使用了耳塞以防止水进入她的耳朵。
02
耳塞, 入耳式耳机
an earphone that is inserted into the ear canal



























