a preparatory course的用法和样例：
例句
- It is also aimed to serve as a preparatory course for students planning to travel to India on the MIT India program.
课程也是计划赴印度参与麻省理工学院印度项目的预备课程。 - Abbey College provides the full-time university introductory course and English language curriculum for the different background and the cultural international student.
阿贝学院为不同背景和文化的国际学生提供全日制大学预备课程和英语语言课程。
