人科之动物

例句：

1. 1. He studied history and physics as part of his major in the science department.
   他在科学系主修时，学习了历史和物理。
2. 2. The library has a wide range of books for different subjects.
   图书馆有各种各样的书籍供不同学科的学生选择。
3. 3. Different cultures have their own unique customs and traditions.
   不同的文化有不同的独特习俗和传统。