Mathematics is not just a human invention; it has a deep reality that exists independently of us.
Collaboration across nations is the only way to solve the complex challenges of ocean conservation.
The family is the basic unit of society, and it is under attack.
读诗应当以心灵去感悟心灵,不能仅从字面意思去理解。
The greatest tragedy of humanity is not death, but the loss of dignity.