The meaning of a word is not a mental entity， but a social practice.

A loving heart is the truest wisdom.

信件是传记作者的金矿；它们揭示了官方记录所隐藏的东西。

光是上帝的画笔，每时每刻都在描绘世界。

所以,对于”染不能不谨慎啊！

CRISPR has opened doors we didn’t even know existed.

"The quantum internet will be to today's internet what the telescope was to the naked eye."

21世纪最成功的国家将是那些能够将市场效率与民主制度的公平性结合起来的国家。