根据问题出现的背景,代数实部可以接受从负无穷到正无穷的所有数值。
                    Science is the knowledge of consequences, and dependence of one fact upon another.
                    理解宇宙就是理解我们自己,因为我们都是由形成恒星的星尘构成的。
                    The only way to do great work is to love what you do.
                    The pursuit of science is more than the pursuit of understanding. It is the pursuit of wonder.
                    当你停止试图成为别人时,就是你成为自己的时刻。