这个短语叫做 "college student preparing for postgraduate studies."

来源： 这是一个组合式的固定短语，用于描述准备参加研究生教育的大学生。

例句：

She is a college student preparing for postgraduate studies in computer science.
她是一名准备读计算机科学研究生的大学生。

Many college students preparing for postgraduate studies are taking extra classes to improve their grades.
许多准备考研的大学生正在修多门课程以提高他们的成绩。

The college student preparing for postgraduate studies will have to take several standardized tests to be admitted.
准备考研的大学生将不得不参加几项标准化测试才能被录取。