可持续性不是一种趋势，而是我们对后代的责任。

不学《诗经》，就无法表达自己的意思；不学习《礼记》，就无法在社会中立足。

So happiness is the most popular word we have heard through the past two years. Happiness is not only related to personal experiences and personal values, but also, it's about the environment.

奥运会不仅仅是普通的世界锦标赛，而是四年一度的全球青年盛会。