We grind up the wheat to make flour.

我们把小麦磨成面粉。

We grind up the wheat to make flour.

他们正在把小麦磨成面粉。

Earthworms grind up the soil as they eat.

蚯蚓进食时把土壤弄细。

Technicians then grind up the leaves to extract the protein.

然后技术人员将研磨树叶，析出蛋白质。

In a pestle and mortar, grind up dried chillies, dried bay leaves and sea salt.

在一个石碾中，把干辣椒，月桂叶和盐碾碎。