In the landscape of string theory, there are perhaps 10^500 different vacuum states, each corresponding to a different possible universe.

绿色低碳发展不是选择题，而是必答题。

You can't just give up on something because it's hard.

The Internet is a global resource that should be managed in the public interest.

To lose a language is to lose a way of seeing the world.

翻译：事物发展到了极点，就要发生变化，发生变化，才会使事物的发展不受阻塞，事物才能不断的发展。