hopper door frame

例句：

1. 1. The new car has a sleek and modern hinge door frame.
   这款新车的门框设计得既光滑又现代。
2. 2. The old house was renovated with a traditional hinge door frame.
   这所老房子经过翻新，采用了传统的铰链门框。
3. 3. The engineer designed the hinge door frame to be easy to install.
   这位工程师设计的铰链门框安装起来非常方便。