earphone
US
UK earphone n: (single earpiece)
SC 耳机 ěr jī
TC 耳機
TC 耳機
SC 耳塞 ěr jī，ěr sāi
Adrian uses an earphone to talk on her cell phone while driving.
earphones npl: (headset, headphones) (头戴式)
SC 耳机 ěr jī
TC 耳機
TC 耳機
Call centers use high-tech earphones these days.
earphones npl: (earbuds: in-ear headphones)
SC 耳塞 ěr sāi
SC 耳机 ěr sāi，ěr jī
TC 耳機(塞耳式)
TC 耳機(塞耳式)
Sally wears earphones when she goes jogging.