windowless electron multiplier

例句：

1. 1. The new building is windowless, which makes it more energy-efficient.
   这座新建筑是无窗的，这使它更加节能。
2. 2. The room was windowless, so I couldn't see the view from outside.
   房间是无窗的，所以我从外面看不到景色。
3. 3.The designer wanted to create a windowless space that would feel like a natural cave.
   设计师想要创造一个无窗的空间，感觉像是自然的洞穴。