| 1 | The population density of this city is very high. | |
| 2 | 18 sts/36 rows = 4 inches in garter st using larger needles | |
| 3 | The population density in the city is very high, and public resources are limited. | |
| 4 | The population density in the north is low and the level of urbanization is not high. | |
| 5 | Mainland China has a high population density, especially in urban areas. |