吊窗滑轮

例句：

1. 1. The window is too high for me to reach, so I need a window lift to open it.
   窗户太高，我够不着，所以需要安装一个窗户升降机来打开它。
2. 2. The new elevator has a smooth ride and a comfortable seat.
   新电梯运行平稳，座椅舒适。
3. 3. The old-fashioned pulley system was replaced by the modern chain drive system.
   传统的滑轮系统被现代的链条驱动系统所取代。