| 1 | You grind coffee beans in your mouth. | |
| 2 | Technicians then grind up the leaves to extract the protein. | |
| 3 | Women once spent long hours grinding grain by hand. | |
| 4 | Processing these plants probably involved peeling, drying and grinding their roots. | |
| 5 | Poorly crystallized diamonds used for industrial cutting and abrasion. |