四年 的中文句子和英文句子

四年的预科学习应该让这些孩子变得温文尔雅

Four years of prep school should polish those children.


我国每四年一次人口普查。

The census is taken one time every four years in our country.


帕蒂在大学里混了四年。

Patty dawdled away four years in college.