The attosecond timescale is to electron motion what the high-speed camera was to studying animal locomotion.
阿秒时间尺度对于电子运动的研究，就像高速摄像机对于研究动物运动一样重要。#
It is the greatest good to the greatest number of people which is the measure of right and wrong.
可持续性不是一种选择；它是长期成功的必要条件。
Be kind,for everyone is fighting a hard battle.And if you really wanna see what people are，all you have to do...is look.
布莱克-斯科尔斯公式的美妙之处在于它仅依赖于一个不可观测的参数，即股票的波动率。
数学是一门活生生的学科，不断演变和发展。