随着虚拟现实技术的发展，在旅游业中现实与虚拟将日益紧密结合。

With the evolution of virtual reality technology, tourism will increasingly become a combination of physical and virtual worlds.

youdao

他们的政治生涯已经紧密地结合在一起了。

Their political careers had become closely intertwined.

《牛津词典》

这出歌剧把爱与死的主题紧密结合在一起。

The opera twins the themes of love and death.

《牛津词典》

They bind sometimes better than the natural ligand does, but they don't create the right biological reaction.

结合的比天然配体和受体的的结合更紧密,但不能产生相同的生物效应

耶鲁公开课 - 生物医学工程探索课程节选

I think that a lot of the countries in Europe want to have a closer political and economic integration.

我认为，很多欧洲国家想相互之间有一个更紧密的政治、经济上的结合。

欧洲中的英国 - SpeakingMax英语口语达人

The other thing that I want to do today is try to tie this discussion on vaccines a little bit more closely with what we talked about last week, in terms of what happens inside your body when you receive a vaccine or when you're exposed to an antigen, and how the immune system actually responds to that.

还有就是,我希望可以,把今天关于疫苗的讨论,与我们上周讲过的内容,结合得更紧密一些,当接种疫苗,或者是接触抗原时,人体将会发生怎样的变化,以及免疫系统对疫苗产生何种应答

耶鲁公开课 - 生物医学工程探索课程节选