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use a webcam
use a webcam 泛指使用摄像头进行视频通话、直播或线上会议。
She uses a webcam to attend online classes.
她用网络摄像头参加在线课程。
网络摄像头
先理解核心含义，再看它在真实句子里的用法。
网络摄像头
a digital camera that takes photographs and sends them over the internet
She uses a webcam to attend online classes.
她用网络摄像头参加在线课程。
网络摄像头:输出可通过计算机网络(原为万维网)实时观看的摄像机。
A video camera whose output may be viewed in real time over a computer network, originally the World Wide Web.
用于拍摄数码照片并通过互联网传输的数码相机
a digital camera designed to take digital photographs and transmit them over the internet
I use my laptop's built-in webcam for video calls with my family.
我用笔记本电脑内置的网络摄像头和家人视频通话。
The webcam on my desk has a small light that turns on when it is recording.
我桌子上的网络摄像头在录制时有一个小灯会亮起。
Before the meeting, she checked that her webcam was working properly.
会议前，她检查了网络摄像头是否正常工作。
use a webcam 泛指使用摄像头进行视频通话、直播或线上会议。
She uses a webcam to attend online classes.
她用网络摄像头参加在线课程。
turn on/off 是可分短语动词，也可说 turn the webcam off。
Please turn on your webcam before the video call.
视频通话前请打开你的网络摄像头。
that 引导定语从句修饰 webcam，说明摄像头的功能或特点。
We need a webcam that can rotate 360 degrees.
我们需要一个可以旋转 360 度的网络摄像头。
on the webcam 表示“在摄像头画面中”或“通过摄像头”。
I can't see you on the webcam.
我在网络摄像头画面中看不到你。
Not this
I bought webcam for online classes.
Use this
I bought a webcam for online classes.
webcam 是可数名词单数，前面需要冠词 a/an；中文没有冠词，容易漏掉。
Not this
There are two webcam on the desk.
Use this
There are two webcams on the desk.
可数名词复数要加 -s，webcam 的复数形式是 webcams。
Not this
I saw you in webcam during the meeting.
Use this
I saw you on webcam during the meeting.
表示“通过摄像头”时英语用 on webcam，介词 on 不可换成 in；这是固定搭配。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
内置网络摄像头
This laptop has a built-in webcam.
这台笔记本电脑有一个内置网络摄像头。
外接网络摄像头
For better video quality, she bought an external webcam.
为了提高视频质量，她买了一个外接网络摄像头。
打开网络摄像头
Please turn on the webcam so we can see you.
请打开网络摄像头，这样我们就能看到你。
遮住网络摄像头
I always cover my webcam when I'm not using it.
我不使用网络摄像头时总是把它遮住。
网络摄像头视频聊天
We had a webcam chat with our cousins yesterday.
我们昨天和表亲们进行了一次网络摄像头视频聊天。
Use webcam naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想 web（网络）+ cam（camera 的缩写）：一个小摄像头连着网络，把画面传到网上。
语域：neutral 常见场景：video calls、live streaming、remote meetings webcam 是日常通用词，正式与非正式场合都常用。多用于指计算机外接或内置的摄像头，比较常见于视频通话、直播等场景。
这些词中，cam、scam、jam、ram、exam 都以 /æm/ 结尾，与 webcam 的 -cam 部分押韵。注意 came 拼写中的 -cam 读作 /keɪm/，并不押韵，不要混淆。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.