This interactive work allows visitors to enter and is fitted with viewing stations such as periscopes and portholes.
在这个交互性的作品中，参观者可以进入其中，里面还配备着诸如潜望镜、炮眼这一类的观测台。
2
Underground offices in Japan are being equipped with "virtual" Windows and mirrors, while underground departments in the University of Minnesota have periscopes to reflect views and light.