It's expensive because the process by which we produce it is energy intensive and resource intensive.

它贵是因为我们制造它的,过程消耗了很大的能源,和资源。

麻省理工公开课 - 固态化学导论课程节选

They knew how to cultivate the grape to make excellent wine; they knew how to cultivate olives to be able to make superb olive oil and how to process them to produce the result.

他们懂得如何培育葡萄来酿造佳酿,他们也懂得如何培育橄榄树,以及制造优良的橄榄油,同样懂得如何将这些工艺更加精细化

耶鲁公开课 - 古希腊历史简介课程节选

We talked very superficially about the biological process going from DNA to protein, so the process of transcription, RNA processing, and translation to produce a protein.

我们粗浅地讲了下,从DNA到蛋白质的生物学过程,即转录,RNA加工,以及翻译得到蛋白质的全过程

耶鲁公开课 - 生物医学工程探索课程节选