外框

例句：

1. 1. The new car has a sleek, external frame design.
   这款新车拥有光滑的、外部框架设计。
2. 2. The outer wall of the building is made of brick.
   这座建筑的外墙由砖砌成。
3. 3. The engineer designed the external frame to support the weight of the structure.
   工程师设计了外部框架来支撑结构的重负。