Ok, double line. If there are no questions I'm going to make a dramatic change in topic.

好的，这是重点，如果没什么问题,我要讲下面的内容。

麻省理工公开课 - 计算机科学及编程导论课程节选

And it will be a topic that you can discuss with your exchange partner if you have one.

如果你有语伴的话，这将是你们可以讨论的一个话题。

学外语的时候 - SpeakingMax英语口语达人

And then, if we have time at the end, we'll introduce one last topic, which is isoelectronic atoms and ions.

最后，如果有时间的话，我们将再介绍最后一个主题：,等电子原子与离子。

麻省理工公开课 - 化学原理课程节选

If a topic had been covered--even inferiorly--elsewhere, he wanted nothing to do with it.

FORBES: Magazine Article

On Keystone, I don't know if -- we haven't been able to know if the topic was touched on at that summit.

WHITEHOUSE: Press Briefing

If a topic arises that you know about, speak up.

FORBES: Spread the Love (To Your Rolodex)