请爷爷吃豆腐(上)

叮叮和爷爷都喜欢吃豆腐,今天,叮叮想要自己做豆腐请爷爷吃,我们一起跟叮叮动手自己做豆腐吧。

Scientific common sense Taiwan, Cina Scientific Enlightenment Cinese Ricerca scientifica 3 7 6 5 4 8 Scienza Authorization Newtonino Operative experiment