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。#
The one thing that offends me the most is when I walk by a bank and see ads trying to convince people to take out second mortgages on their home so they can go on vacation. That's approaching evil.
不要因为累了就停下来，完成了再停下来。