不需要在课程开始前注册。

It is not necessary to enroll before the course starts.

youdao

他们中的大多数人在课程开始前都参加了在线语言测试。

The majority of them took an online language test before starting their programme.

youdao

在课程开始前，请保持安静！

Before the lesson starts, mute yourself!

youdao

as most of people are starting to do Master's. Even they're doing Ph.D.

所以大部分人开始读研。甚至有人开始修博士课程。

就业很难 - SpeakingMax英语口语达人

But before I get started, I have to point out something a little bit unusual about this class We're being filmed.

但在我开始之前,我要告诉大家这个课程的一点特别之处,我们会被录像

耶鲁公开课 - 心理学导论课程节选

Well a number of you have spent this past week playing with this particular tool which is a project the course has been working on for some time in an effort to make it easier and more social to actually shop for courses.

在过去的一周里,已经有一部分人开始使用这种特殊的工具了,这门课程一直在致力于这一工具的开发,目的是为了让课程变的更简单,选课更人性化。

哈佛公开课 - 计算机科学课程节选