“一个老头,不走不跑,叫他睡觉,他就摇头。”你猜是什么东西?不倒翁,不错。不倒翁是重心玩具,有个半球形的底部,上轻下重,摇来晃去不会倒下,很有趣。有位作家曾有一篇专写不倒翁的散文,他认为:“不倒翁本来是上好的发明,只是没有得到充分利用。”现在的情况可大不相同了,设计师 “An old man, not walking or running, told him to sleep. He shook his head.” What do you guess? No tumbler, yes. The tumbler is a center of gravity toy. There is a hemispherical bottom. It is light and heavy. It doesn’t fall and it’s fun. One writer once had a prose writing a tumbler. He thought: “The tumbler was originally a good invention, but it was not fully utilized.” The current situation can be quite different. Designers