Pulleys
n. 滑轮（组）, 滑车( pulley的名词复数 ); 皮带轮
🗣️ 情景例句
I'm sorry you have to leave so soon.
很遗憾你不能多呆会儿。
How are you this evening?
今晚上您好吗？
His telescopic observations are justly immortal;
伽利略用望远镜所作的观察确实是不朽的，