bottom-hinged window

例句：

1. 1. This new model has a bottom-hinged window that opens up to let fresh air in.
   这款新型号的窗户是下铰链式的，可以打开让新鲜空气进来。
2. 2.The old house had a bottom-hinged window, which was quite functional.
   那所旧房子有一个下铰链式的窗户，功能相当实用。
3. 3. The designer wanted to incorporate a bottom-hinged window into the new office building.
   这位设计师想在新的办公楼里加入一个下铰链式的窗户。