On topic based routing, the subscriber would get all the messages on the registered topic.

采用基于主题的路由，订阅者将获得所注册主题上的所有消息。

youdao

They are facilitators, defusing conflict and steering the conversation back on topic when necessary.

他们是调解者，在必要的时候化解冲突并掌控整个谈话回到正题上来。

youdao

If you decide to submit your site to a directory, make sure it's on topic, moderated, and well structured.

如果你决定提交你的网站到一个目录，确保它是基于话题、会审核、建设好。

youdao

They attract anywhere from a handful to over a 100 people, depending on the topic.

VOA: standard.2010.05.04

I have read an entire page full of words and given it zero because it is not on topic.

我读到的是一整篇都是单词的文章,给了零分，因为跑题了。

麻省理工公开课 - 固态化学导论课程节选

We started on this topic on Tuesday, particularly emphasizing smallpox and kind of the history of vaccine development.

我们在本周二,重点讨论了天花,以及疫苗的发展历史

耶鲁公开课 - 生物医学工程探索课程节选

The point is, they stay on topic and they keep beating the drum no matter what.

FORBES: Is the Media Fair and Balanced?

Occasionally, when the shoes aren't being thrown, to keep our leaders - keep our leaders on topic.

NPR: Price Too High For Being World's Top Military Force?

Engagement includes the number of relevant messages, and how frequently the influencer engages in conversations on topic.

FORBES: Can You Measure Your Digital Eminence?