过去是一个跟随我们的影子，总是存在，总是影响。

过去从未消逝，它甚至还未过去。

The art of programming is the art of organizing complexity, of mastering multitude and avoiding its bastard chaos as effectively as possible.

In computer science, we often have to deal with systems that are too complex to understand all at once.

The popularity of cloud computing will accelerate the integration and development of the global digital economy.