The meaning of a word is not a mental entity， but a social practice.
We try to buy stocks that are undervalued, and then we wait for the market to recognize their value.
不要等待机会，创造机会。
"Every film is a journey, not just for the audience, but for the actor as well."
一个有趣的事实是，岩石越古老，与今天的岩石差异越大。
The key to sustainable development is to balance economic growth and environmental protection.