closed-face

例句：

1. 1.The engineer carefully closed the door to prevent any accidents.
   工程师小心地关上门以防发生任何事故。
2. 2. The machine's closed-face design makes it easy to clean.
   机器的闭合面设计使得清洁变得容易。
3. 3.The closed-face design of the window allows for privacy while still allowing natural light to enter.
   窗户的闭合面设计既保证了隐私，又允许自然光进入。