Polyspast
滑车组, 复滑车
🔁 扩展释义
【化】 复式滑车; 滑车组
🗣️ 情景例句
Hey, that's terrific, Mom!
嗨 ，太棒了， 妈妈！
May I speak to Mr. Johnson, please?
我想请约翰先生听电话好吗？
it is extremely difficult to estimate the true value of the services which people perform for us.
但要估算别人为我们为所提供的服务的价值却是极其困难的。