所有谎言中最危险的是稍微扭曲的真理。

The book, total expansion of the letter.

The leather industry must evolve to meet both environmental standards and consumer expectations without compromising quality.

The moment of victory is much too short to live for that and nothing else.

函数的概念在数学中是基础的，而λ演算试图使这一概念精确化。