本课程是土木工程专业的一门专业基础课。

This course is a professional basic course of Civil Engineering.

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钢琴伴奏是一门专业的音乐表演艺术，它与声乐是一种相辅相成的关系。

Piano accompaniment is a professional music performing arts, it is a mutually reinforcing relationship with the vocal music.

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明年，麦凯·克伦希望可以再增加两门课程，逐步地把该论坛打造成为选修课程，并最终成为一门专业。

Over the next year, McEachern hopes to add at least two more courses, slowly building the Forum up to a possible minor, and, eventually, major area of study.

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So, it's kind of nice to major in the thing that you're going to get to have the opportunity to do for the rest of your life.

所以你们最好主修一门,你们今后一生可以,以之为职业的专业。

麻省理工公开课 - 化学原理课程节选

And there just happens to be a major here which is a kind of an intersection of all those things.

现在有一门专业能够将这3门专业结合在一起。

我的梦想是百万富翁 - SpeakingMax英语口语达人

If you want to learn about compound meters go take music 210 and become a music major.

如果你想学习复拍子的话,可以去上音乐210这门课,成为一名音乐专业的学生

耶鲁公开课 - 聆听音乐课程节选