Poetry must always have a moral purpose; it should instruct while it delights.

能源行业必须成为气候解决方案的一部分，而不是问题的一部分。

The interplay between randomness and structure is a central theme in both mathematics and computer science.

欧洲的统一是历史的必然。

最伟大的艺术总是处于失败的边缘。