1
carry sb on a stretcher
stretcher 指搬运伤病员的担架，介词用 on 表示“在担架上”。
Two paramedics carried the injured climber on a stretcher.
两名医护人员用担架抬着受伤的攀岩者。
画布内框；画布框
stretchers — plural of stretcher
先理解核心含义，再看它在真实句子里的用法。
画布内框；画布框
a wooden frame over which canvas is stretched and fixed for oil painting
Two paramedics carried the injured climber on a stretcher.
两名医护人员用担架抬着受伤的攀岩者。
这里指绘画用的画布框，不是担架。
拉伸的人或物。
Someone or something that stretches.
内框
a wooden framework on which canvas is stretched and fixed for oil painting
用于抬送伤病员或死者的简易担架。
A simple litter designed to carry a sick, injured, or dead person.
撑具
a mechanical device used to make something larger (as shoes or gloves) by stretching it
She bought a new stretcher and some canvas for her first oil painting.
她买了一个新的内框和一些画布，准备画她的第一幅油画。
The artist adjusted the stretcher until the canvas was perfectly tight.
画家调整了内框，直到画布完全绷紧。
These stretchers come in several sizes, so you can match them to your canvas.
这些内框有几种尺寸，你可以根据画布来选配。
stretcher 指搬运伤病员的担架，介词用 on 表示“在担架上”。
Two paramedics carried the injured climber on a stretcher.
两名医护人员用担架抬着受伤的攀岩者。
onto 强调移动到担架上的动作，与表示状态的 on 不同。
The police helped lift the old man onto a stretcher.
警察帮忙把老人抬到担架上。
此处 stretcher 指油画用的画布内框，常见于绘画场景。
The artist stretched the prepared linen over the stretcher and stapled it.
画家把处理过的亚麻布绷在内框上并钉好。
Not this
He was carried to the hospital on stretcher.
Use this
He was carried to the hospital on a stretcher.
stretcher 是可数名词，单数形式前必须有冠词；中文没有冠词，所以容易漏掉 a。加上 a 才能表示“一副担架”。
Not this
The injured player was carried with a stretcher.
Use this
The injured player was carried on a stretcher.
表示“用担架抬某人”时，介词应用 on，表示躺在担架上；with a stretcher 会被理解为用担架这个工具，不符合英语习惯，也容易让人误以为是担架在抬人。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
画布内框
The canvas is fixed tightly onto a wooden stretcher frame.
画布被牢牢地固定在木制内框上。
内框木条
You can buy stretcher bars separately and join them yourself.
你可以单独购买内框木条，自己把它们拼接起来。
内框楔子
Tap the stretcher keys gently to increase the tension of the canvas.
轻轻敲击内框楔子，以增加画布的张力。
绷在内框上的画布
In modern art, a canvas on a stretcher is often displayed without a frame.
在现代艺术中，绷在内框上的画布常常不加外框直接展出。
组装内框
It took him five minutes to assemble a stretcher from four bars.
他花了五分钟，用四根木条组装了一个内框。
Use stretchers naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
stretch（拉紧）加 -er（…的东西）：把画布绷紧的木框就是 stretcher；记住“拉紧”的“拉”，就想起它的核心动作。
语域：neutral 常见场景：油画创作、画布制作、画框装裱 该释义指画布内框，是美术和装裱领域的专业用语，多用于油画绘画、画布制作及画框装裱等场景。通常以中性、正式的语气出现在专业说明或操作语境中，日常口语中较少单独使用，并注意不要与‘担架’这一常见含义混淆。
与 stretcher /ˈstrɛtʃɚ/ 押韵的有 etcher、fetcher、sketcher（/-ɛtʃɚ/）。catcher、teacher、pitcher 拼写相近但元音不同：catcher /ˈkætʃɚ/、teacher /ˈtiːtʃɚ/、pitcher /ˈpɪtʃɚ/，注意它们不押韵。
Dictionary facts from ECDICT, WIKTIONARY.