Grinding up, kneading and fermentation, the whole process takes 3 days.

上碾，揉面，发酵，前后要花3天时间。

Then, you could grind them up to get some blue pigment!

然后你可以将它们碾碎并得到蓝色色素！

Then you grind them up, and then you let it ferment.

然后把它们磨碎，然后让它发酵。

The large surface area of your molars helps them grind up food.

臼齿的大表面积有助于它们研磨食物。

It was known as mumia and made by grinding up mummified human flesh.

它被称为mumia，通过磨碎木乃伊化的人肉制成。

Basically it dries and grinds up all of the inside, and then cools it.

基本上，它把里面的东西都干燥、磨碎，然后再冷却。

The onlookers motioned to the driver not to grind up the bird by starting the engine.

所有围观的人都向公共汽车司机打手势：不要开车！不要轧着鸽子！

She has a special machine to grind up the chicken. Grind down means to wear away by pressure and movement.

她有一个专门用来切碎鸡肉的机器。grind down的意思是受到压力或运动导致磨损。

You could grind them up and inject them, so-called " whole killed vaccines."

你可以把它们磨碎并注射， 所谓的“全杀疫苗” 。

(thumbs up dinging) So this is that, grinded up in a powder form.

（竖起大拇指）就是这样，磨成粉末状。