他给门装了一个门铃。

He fitted a doorbell to the door.

youdao

是一个门吗？好的！

A door? Good!

youdao

一个门只是一个消息，图形表示为一端连接序列图的框架边缘，另一端连接到生命线。

A gate is merely a message that is illustrated with one end connected to the sequence diagram's frame's edge and the other end connected to a lifeline.

youdao

The centrality Aristotle ascribes to politics forces us to consider another question ? namely what is the purpose of this study?

亚里士多德加到政治中的,中心论点迫使我们考虑另一个问题,即这门研究的目的为何？

耶鲁公开课 - 政治哲学导论课程节选

it's very difficult when one is so articulate and is able to express exactly what you want to say,

当一个人已经熟谙一门语言，能够用这门语言清楚明白地表达意思，

想学好英语吗？ - SpeakingMax英语口语达人

We're going to talk about various aspects of food and I'd like to start off with a little pop quiz.

我们将讨论有关食品的方方面面,我将以一个小测验来开始这门课

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选