第一堂课是让学生了解这门课的主要内容。

The first lecture introduces students to the main topics of the course.

《牛津词典》

根据最近的研究，学生做事拖延主要有三个原因。

According to recent studies, there are three main reasons that students put off doing things.

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众所周知，学校教育的主要目的是让学生做好准备应对未来。

As is known to all, the main purpose of school education is to have students in preparation for their future.

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Now, this course is primarily aimed at students who have little or no prior programming experience.

现在，这门课程,主要面向零基础,或少量编程经验的学生。

麻省理工公开课 - 计算机科学及编程导论课程节选

which publishes twice a year, student written poetry and short fiction and plays.

这本杂志一年出两期，主要刊登学生们写的诗歌、短篇小说和戏剧。

耶鲁文艺刊主编 - SpeakingMax英语口语达人

Now, in the course of this discussion, Socrates and his disciples argue about not so much the existence of the soul, but the question really is the immortality of the soul.

在这段谈话中,苏格拉底和他的学生们,讨论的主要不是灵魂存在的问题,而是灵魂不朽的问题

耶鲁公开课 - 死亡课程节选