计算复杂性的本质是理解什么可以被有效地计算的极限。

We're still in the first minutes of the first day of the Internet revolution.

我是一个喜欢被认可的人。

经济周期并不像曾经认为的那样仅仅是围绕稳定趋势的波动，而是反映了经济中更深层次的结构性变化。

讲诚信，是天下行为准则的关键。

The key to solving complex problems is to break them down into smaller, more manageable parts.

The only limit to our realization of tomorrow will be our doubts of today.

城市林业证明自然与城市可以共同繁荣。