热带

• The food undergoes no deterioration in the tropics .
  这种食品在热带地方不会变质。
• Tropical america is the home of several other pine species .
  热带美洲是另外几个松树种的故乡。
• Historically, shifting cultivation was not limited to the tropics .
  历史上烧垦农业并不限于热带。
• 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。
• Tropical forests are characterized by a rapid turnover of nutrients .
  热带森林的特点是养分周转快。
• A coral reef may build up to the surface of the tropical ocean .
  在热带海洋，珊瑚礁可一直筑到海面。
• 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。
• A much greater structural risk occurs in temperate and tropical areas .
  在温带和热带地区会出现更大的结构风险。
• 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。
• These systems appear ecologically well adapted to the humid tropics .
  这些系统对于潮湿热带地区表现良好的生态适应。