| 1. | She sorted out her things for tropic travel .
她整理热带旅行的东西。 |
| 2. | Night descends quickly in the tropics .
热带地区黑夜来得很快。 |
| 3. | The heat in the tropics can be oppressive .
热带气候热得难受。 |
| 4. | Darkness falls quickly in the tropics .
热带地区天黑得很快。 |
| 5. | The food undergoes no deterioration in the tropics .
这种食品在热带地方不会变质。 |
| 6. | Historically, shifting cultivation was not limited to the tropics .
历史上烧垦农业并不限于热带。 |
| 7. | Sometimes two crops a year are taken in the humid tropics .
在湿润的热带地区有时一年种两季作物。 |
| 8. | A cyclone in the tropics is caused by a smaller area of low pressure .
热带暴风是由小面积低压引起的。 |
| 9. | The tropic of cancer is the most northerly latitude in the northern hemisphere .
在北半球，北回归线的纬度最高。 |
| 10. | The resources of the tropics are not inadequate; they are culture-bound .
热带的资源并非不足；而是受栽培的限制。 |
