Their first day in London was one of introductions, bilateral meetings, a reception at the royal palace with Queen Elizabeth and dinner at Number 10 Downing Street, the official residence of British prime ministers.

VOA: standard.2009.04.01

And then we moved to some general introductions to some foundational ideas in the study of psychology, Freud and Skinner.

接着我为大家概要地介绍了,一些基本的心理学知识,介绍了弗洛伊德和斯金纳的学说。

耶鲁公开课 - 心理学导论课程节选

So how do we get you from for many of you zero to 60 miles per hour after just 11 weeks, well like many courses here is the course structured around not only lectures for conceptual introductions, but sections, office hours and walkthroughs.

十一周后,很多人每小时都能知道60公里内发生的事情，就像这里的很多课程一样,这个课程不只有概念性的介绍，也包括上机和演练讲座。

哈佛公开课 - 计算机科学课程节选