Extensions
n. 扩展, 扩张；延长（extension的复数）
🗣️ 情景例句
And you didn't exercise?
你没有参加健身操？
Thank you.
谢谢。
It has to be tall because it is like a giant block and tackle,
井架必须很高，因为它像一个巨型滑轮组。