translation.en: And evolution, although it was established well over 100 years ago by Charles Darwin and a vast number of other people, evolution still is a little bit intangible.
translation.zh: 而进化， 尽管它的理论在一百年以前就被查尔斯.达尔文 和许多其他的科学家所建立和完善 进化论依然有一点点抽象。