regions of human body

例句：

1. 1. The regions of the world are vast and diverse.
   世界各地的区域广阔且多样。
2. 2.The regions were once covered in forests.
   这些区域曾经被森林覆盖。
3. 3. The regions have different cultures and languages.
   这些区域有不同的文化和语言。