Grooved pulley
[机] 环槽滑轮
🧩 词语组成解析
a. 带纹道的；表面有沟槽的
pulley
['pʊli]
n. 滑轮（组），滑车;皮带轮;
v. 用滑轮升起，用滑车推动;给…装滑车;
🗣️ 情景例句
more than reading, writing, and arithmetic.
比阅读 、写作及算术更多的东西。
How did you break your leg?
你怎么弄断了腿？
You forget that I was a medical student once upon a time.'
你忘了我以前是学医的了。”