The clay is then moistened with water, and ground in a kind of mill until it becomes a smooth paste.

然后把粘土用水弄湿，在一种磨粉机里面碾碎，最后粘土变成了一种细细的糊状物。

When mixed with water the powder forms a smooth paste.

【when】和水混合以后，这种粉末会形成均匀的糊状。

Rice is turned into a silky smooth paste, and then they stretch that into larger notes, and then it… yeah.

大米被变成丝滑的糊状物，然后他们将其拉伸成更大的音符，然后… … 是的。