CHAD O'CARROLL: These window bars are made of concrete, they're immovable and they are basically either fully opaque or they are kind of slat - - slats that just allow you to look in one way.

这些窗户栏由混凝土制成，它们是无法移动的，并且完全不透明，再不然就是那种板条窗，那种你只能以某种特定角度才能看到里面的窗户。