喵~自在的ken
這是一個完全平坦的地板,利用錯覺來防止有人在走廊上奔跑。
Fascinating things:
Perfectly flat floor, designed to stop people from running in the hallway
https://pbs.twimg.com/media/DaLbebMXkAA1NTJ.jpg
掰噗~
(p-laugh)
載入新的回覆