The spread of liberal democracy and the integration of the world economy have created a situation in which the major powers are no longer willing to risk war with one another.

语言是一种人类自发的创造，语言的发展遵循一定的规律。在人生的某一时期它会达到某种程度。

企业的核心竞争力在于创新，没有创新就没有未来。