墙会讲故事。
Leadership means making tough decisions today for a better tomorrow.
The writer must be a defender of the marginal, the forgotten, the defeated.
量子理论的发展表明,经典的空间和时间概念不足以在最基本的层面上描述物理世界。
The pursuit of happiness is not about feeling good all the time, but about striving toward meaningful goals.