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
What's happening in Singapore recently?
近来新加坡的情况怎样？
Spot, the dog, always whimpers when he is left alone.
那条叫斯伯特的狗，被单独留下来，时常寂寞得呜咽。
Who do you think you are?
你以为你是谁？