Backing pulley
[机] 回行皮带盘
🧩 词语组成解析
backing
[['bækiŋ]]
n. 后退, 衬背, 后援, 支持者\\n[化] 衬垫
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
A surprise?
惊喜？
March comes in like a lion and goes out like a lamb.
三月来如雄狮，去如绵羊。
Please fill in the blanks when you are answering the test questions.
你考试时请把那些空填上。