抽象的力量在计算机科学中至关重要,它使我们能够专注于问题的本质方面。
牛大叫,但马却不回应;不是因为马没听到声音,是因为它们不是同类啊。点评:同类之间存在着客观联系,故能相应。
Grief is like the ocean; it comes on waves ebbing and flowing. Sometimes the water is calm, and sometimes it is overwhelming. All we can do is learn to swim.