This crazy Canadian named Powel Crosley commercialized this thing called the IcyBall in 1928, and it was a really neat idea, and I'll get to why it didn't work, but here's how it works.
后来有个疯狂的加拿大人Powell Crosley 在1928年將这个项目商业化，命名為Icyball 这是个绝妙的想法 但我会告诉大家为什么没有成功 先解析一下运作原理