This stuff is supposed to be so strong that it makes up the viewports of the Enterprise.

这种物质足够坚硬，可用来制作企业号太空船的观察孔。

Aircraft  such as the DC-8 had a viewing hole in the cockpit ceiling for this.

此，DC-8 等飞在驾驶舱天花板上有一个观察孔。

Not a whisper of disturbance could be allowed into the room containing the apparatus, so Cavendish took up a position in an adjoining room and made his observations with a telescope aimed through a peephole.

房间内不允许有丝毫的干扰, 所迪什在隔壁房间找了个位置, 用望远镜瞄准一个窥视孔进行观察。