The notion of a function is fundamental in mathematics, and the λ-calculus is an attempt to make this notion precise.
            
            
        
        
    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。
        The bond market is the ultimate barometer of market confidence.
                    Make you the most impatient are your greatest source of learning.
                    睡得早起得早,使人聪明、富有、身体好。
                    The biggest adventure you can take is to live the life of your dreams.