earpiece是什么意思

n.听筒

1. She inserted the earpiece into her ear and started listening to music.
她把耳塞插入耳朵，开始听音乐。

2. The detective used the earpiece to secretly communicate with his team during the operation.
侦探在行动中使用耳机来与他的团队进行秘密通讯。

耳机；耳塞；耳机声音放大器