He said corporations,universities, non-profit organizations, and professional associations representing millions of scientists,engineers and teachers have embraced the call.

VOA: standard.2009.11.24

So, these are poor electron donors but also a good electron acceptors, and we call these non-metals.

所以这些元素都不易失电子,但是它们是很好的电子受体，我们把这些叫做非金属。

麻省理工公开课 - 固态化学导论课程节选

The pan-African meeting is expected to call for substantial financial support from the developed world to help developing countries to adjust to a non-carbon-based economy.

VOA: standard.2009.10.13