We have to invent a process, a chemical extraction process that will make the production of magnesium cheaper so that we will have the opportunity to avail ourselves of energy-efficient materials.

我们必须发明出一种方法，一种化学提炼方法,能够使生产镁变得更便宜,那样我们才有机会,让我们自己用上高效能的材料。

麻省理工公开课 - 固态化学导论课程节选

Those animals that you produce are called transgenic animals because they're expressing, usually at high levels, a transgene or a gene that's not normally present in their species.

那么这些小鼠就称为转基因动物,因为转基因动物,通常能高效地,表达转基因,即一个通常不存在于该物种的基因

耶鲁公开课 - 生物医学工程探索课程节选

But with this example alone can you realize -- that with some more exercise of thoughts and intelligent-- I don't wanna say intelligent design here, intelligent design can you actually solve this problem so much more efficiently and just as correctly.

但通过这一例子，你们应该能认识到,通过更多的思维训练-,在这我并不想说智能设计，你就能真正更高效，准确地,解决问题。

哈佛公开课 - 计算机科学课程节选

That efficient metabolism that banks calories is highly efficient, highly important, highly adaptable, under circumstances where food is scarce, but not efficient and not adaptive under modern food conditions in the developed world.

能高效存储能量的代谢系统,在食品短缺的情况下,非常重要,有着较强的适应能力,但却不能适应,现代发达国家的食品环境

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选