Stepped pulley
[机] 塔轮
🧩 词语组成解析
v. 踏；行走（step的过去式和过去分词）
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
I want to send this letter to China, by air mail.
我想把这封信航空邮到中国。
Hold your horses.
耐心点儿。
The snake, however, continued to 'dance' slowly.
然而那蛇却还是缓慢地“舞动”着。