Topic
| Code | 20001218 |
|---|---|
| Name | pandemic |
| Description | An epidemic of infectious disease that has spread across a large region or even worldwide |
| Lft | 9 |
| Lvl | 4 |
| Rgt | 10 |
| Code | 20001218 |
|---|---|
| Name | pandemic |
| Description | An epidemic of infectious disease that has spread across a large region or even worldwide |
| Lft | 9 |
| Lvl | 4 |
| Rgt | 10 |