I have called this principle, by which each slight variation, if useful, is preserved, by the term Natural Selection.  

当他凝视她的黑眼睛，看着她的嘴唇在笑与沉默之间徘徊时，他学到了世界上所有人都能理解的语言——那是爱。

The food industry has a responsibility to both people and the planet.

艺术的任务是使世界更加人性化。