Welcome to the twenty-first century.

欢迎进入21世纪。

But in the twenty-first century, a very different story is unfolding.

但在21世纪，呈现在大家面前的又是另外一种故事。

The twenty-first century began with a very unequal distribution of power resources.

21世纪初，权力资源分布相当失衡。

We had built and crossed our bridge to the twenty-first century, and were not going back.

我们已经建立并跨过了通往21世纪的桥梁，并且，我们不会走回头路。