A proof tells us where to concentrate our doubts.
"I don’t make music for charts. I make music for ears."
λ演算是一种表示函数及其应用的形式体系。
The ocean is not just a resource; it's our responsibility to protect and sustain it for future generations.
人无国王、庶民之分,只要家有和平,便是最幸福的人。