1
a pair of earphones
earphone 常以复数形式 earphones 出现；表示一对/一副时用 a pair of。
He bought a pair of earphones.
他买了一副耳机。
耳机
earphones — plural of earphone
先理解核心含义，再看它在真实句子里的用法。
耳机
a device worn on or in the ear that changes electrical signals into sound, so that a person can listen privately
He bought a pair of earphones.
他买了一副耳机。
将电信号转换为声音并贴近耳朵佩戴的换能器,尤指电话的听筒或耳机。
A transducer that converts electric signals into sound and is held near the ear, especially as part of a telephone; an earpiece or headphone.
将电信号转换为声音的电声换能器；佩戴于耳上或插入耳中。
electro-acoustic transducer for converting electric signals into sounds; it is held over or inserted into the ear
I put one earphone in my left ear so I could still hear the doorbell.
我把一只耳机塞进左耳，这样还能听见门铃。
AI contextual example
These earphones have a microphone for taking calls.
这副耳机带有麦克风，可以接听电话。
AI contextual example
She packed her earphones in her bag before the flight.
登机前她把耳机放进了包里。
AI contextual example
it was not the typing but the earphones that she disliked
她讨厌的不是打字,而是耳机。
WordNet
earphone 常以复数形式 earphones 出现；表示一对/一副时用 a pair of。
He bought a pair of earphones.
他买了一副耳机。
wear 表示佩戴状态；若强调戴上这个动作，可用 put on earphones。
She wears earphones on the bus.
她在公交车上戴着耳机。
with earphones 表示借助耳机这一工具，常跟在动词短语后。
I like listening to music with earphones.
我喜欢用耳机听音乐。
Not this
I bought a new earphone.
Use this
I bought new earphones.
earphone 是可数名词，指单个听筒；表示一副耳机时要用复数 earphones（或 a pair of earphones）。汉语的“耳机”没有复数形式，所以学习者容易只用单数。
Not this
I like to listen music with earphones.
Use this
I like to listen to music with earphones.
listen 是不及物动词，接宾语时必须先加介词 to，即 listen to music。汉语“听音乐”里没有介词，直接照搬就会漏掉 to。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
无线耳机
These wireless earphones last for eight hours on a single charge.
这些无线耳机单次充电可以使用八小时。
降噪耳机
She bought noise-cancelling earphones for her commute.
她为通勤买了降噪耳机。
入耳式耳机
In-ear earphones are more portable than over-ear ones.
入耳式耳机比头戴式耳机更便携。
耳机插孔
My phone doesn't have an earphone jack.
我的手机没有耳机插孔。
戴耳机
He wears earphones whenever he studies.
他学习时总是戴着耳机。
Use earphones naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
ear（耳朵）+ phone（电话）→ 贴在耳朵上“打电话”的小设备，就是耳机。
语域：neutral 常见场景：日常对话、电子产品说明、音频设备讨论 表示耳机的常用词，现代英语中“headphone(s)”更常见；“earphone(s)”多用于指入耳式或小型耳机，日常和产品说明中均可使用。
earphone 中 ear 读 /ɪr/，因此 hear /hɪr/、near /nɪr/ 的 ear 读音一致；但 bear /bɛr/ 的 ear 读 /ɛr/，是形近音异词。结尾 -one：phone /foʊn/、tone /toʊn/ 中的 one 读 /oʊn/，但与单词 one /wʌn/ 不同，注意不要混淆。
Dictionary facts from ECDICT, WIKTIONARY.