" from which it would seem , my dear count , that you can at pleasure enjoy the seraphic strains that proceed from the seven choirs of paradise ? “哦，我亲爱的伯爵，您说这句话就好象您可以随意听到天上的第七交响曲似的。 ”
2.
Fortunately , we have contrived mathematics in which the definition of limit is given by great mathematicians louis cauchy and weierstrass , and what surprises us is that the demon has a seraphic appearance 这个“魔鬼”无处不在，数学家们历经千年的磨砺，直到19世纪柯西和魏尔斯特拉斯给出极限的精确定义，才完成“降魔”过程，令人惊异的是它竟然有着天使一样美丽的脸庞。
