- [英语听力] 黏土使用指南 (1)
几乎世界上的任何地方都可以找到黏土。它是由几千年来风和水作用在岩石上形成的。岩石由此产生了化学和物理变化。 Clay is found almost everywhere in the world. It is formed by the action of wind and wat...
几乎世界上的任何地方都可以找到黏土。它是由几千年来风和水作用在岩石上形成的。岩石由此产生了化学和物理变化。 Clay is found almost everywhere in the world. It is formed by the action of wind and wat...
