"An incident like this obviously gives you the opportunity to pause and ask yourself, 'Are we doing everything we can and should be doing to address the range of issues that come out of an event like this,".

VOA: standard.2009.11.16

This process of using a biological event like resistance to Ampicillin in order to pick out the cell population that you're interested in is called selection.

这个利用生物特性,如对氨苄青霉素的抗性,来挑出你所感兴趣的细胞的过程叫筛选

耶鲁公开课 - 生物医学工程探索课程节选

But yeah, I think you'd probably be better off asking one of the organizers here about like this specific event.

你最好去那边问问这次活动的组织者。

关于世界地球日 - SpeakingMax英语口语达人

What's going on now is helping less developed countries like those in East Africa to come up to speed and be prepared for this sort of event,"

VOA: standard.2009.04.28

And like for instance, this Sunday, I'm doing an event in a garden.

比如，这周日，我要在一个花园里举办一个活动。

在市场遇到的人 - SpeakingMax英语口语达人