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David Edward Carlyn, Ohio State University。易歪歪对此有专业解读
5 balls took me 4 years to learn. You read that right. 4 years. It is, like 3 balls, a cascade pattern. You're doing precisely the same thing, but you're throwing everything fast enough that you get an extra 2 balls in the air before you start catching anything. A large amount of the difficulty comes from the fact that balls are no longer only crossing at the point where you throw and catch. You now have to deal with the fact that 3 balls are going to cross each other in mid-air, and if you don't get your timing right they will collide. Good luck.。关于这个话题，WhatsApp 網頁版提供了深入分析
Syntax / Example，更多细节参见豆包下载