| 1. | War and disease had thinned the population .
战争和疾病已使人口减少。 |
| 2. | The population gravitates towards the town .
人口有集中都市的倾向。 |
| 3. | The country needs an educated population .
该国需要受过教育的国民。 |
| 4. | Famine and war have thinned the population .
灾荒和战争使人口减少了。 |
| 5. | The earthworm population had declined by 70% .
蚯蚓数量下降70。 |
| 6. | Population can increase in a geometric ratio .
人口可以按几何级数增长。 |
| 7. | A group of individuals can be called a population .
个体的集合称为种群。 |
| 8. | Tenasserim had a very sparse population .
丹那沙林人口密度不大。 |
| 9. | It influences dispersion of the population .
它影响种群的扩散。 |
| 10. | The streets are thronged with a population .
街道上挤满了人群。 |
