阿秒時間尺度對于電子運動的研究，就像高速攝像機對于研究動物運動一樣重要。#
解釋：把腹心的疾病去掉，而放在大腿胳臂上，有什么益處？
經濟景觀是一個由不同等級的中心地組成的系統(tǒng)，每個中心地為特定區(qū)域服務。
Failure gave me an inner security that I had never attained by passing examinations. Failure taught me things about myself that I could have learned no other way. I discovered that I had a strong will, and more discipline than I had suspected; I also found out that I had friends whose value was truly above the price of rubies.
唯一真正屬于你的是你的時間。
Quality is not an end in itself; it is a means to an end.