https://twitter.com/r_papa23/status/1510564721958993920
https://pbs.twimg.com/media/FPaamyGaIAUCtCQ.jpg
https://pbs.twimg.com/media/FPaamzKaQAAdzVT.jpg
https://pbs.twimg.com/media/FPaamyKaQAAXm2c.jpg
https://pbs.twimg.com/media/FPaamyGaMAEyW9A.jpg
看起來是凸面的UR呢