Learning based courses are the prerequisite courses.

学习基础课程是学习专业课程的前提。

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The guidance counselor suggested that I focus on my prerequisite courses so that I can make sure the credits count.

咨询顾问建议我把注意力放在预学课程上，这样才能确保能拿到学分。

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The course will be taught in the second semester of the third academic year, which includes 48 hours. Its prerequisite courses include Computer Network and Cryptography.

本课程第三学年第二学期开设，计划学时48，先修课程为：计算机网络，密码学。

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