互联网是我一生中见过的最具革命性的事物。
你无法回到过去改变开头，但可以从现在开始改变结局。
Every smell we perceive is a complex interaction between molecules and receptors, and understanding this interaction is key to understanding our sensory experiences.
I always like to look on the optimistic side of life, but I am realistic enough to know life is a complex matter.