有一个人从天堂来到人间旅游，他所使用的是有效三十天的减价票，他试图要把他的回程票卖掉。
Ingersoll's story of the man that went down from heaven on a reduced-rate excursion ticket good for 30 days --- and tried to sell his return ticket.
Data is the oil of the future, and cloud computing is the tool to extract and refine this oil.
永远不要停止学习——世界一直在变化。
幽默只是对抗宇宙的另一种防御机制。