| 1 | We must curb the spread and use of these weapons. | |
| 2 | To prevent the spread of infectious diseases, it is necessary to control the spread of viruses in a timely manner. | |
| 3 | We must take decisive measures to prevent the spread of the epidemic. | |
| 4 | Cancer cells have the ability to rapidly divide and spread throughout the body. | |
| 5 | He threw a stone into the pond and watched the ripples spread. |
