translation.en: Chimpanzees, I believe, more than any other living creature, have helped us to understand that, after all, there is no sharp line between humans and the rest of the animal kingdom.
translation.zh: 我觉得，与别的生物相比 黑猩猩更有助于我们认识到，人类和 动物王国里的其他成员终归并无明显界限