Historical transition is not an abstract concept but clear to see.
历史的过渡并非抽象的概念，在此一目了然。
Beauty is abstract but a house is not.
美是抽象的，而房屋则不是。
Fear is abstract but a knife is not.
恐惧是抽象的，但一把刀却是具体的。
I can't define what love is. But I think love is not abstract.
我无法定义爱情是什么，但我认为爱绝不是抽象的。
The form of poetry does not apply the abstract sound but the peculiarity of language.
诗的形式运用的是语言当中的特性而不是抽象的声音。
Abstract: : the roadbed construction technology difficulty is not great, but the process is more complex.
摘要：路基施工技术难度不大，但工艺比较复杂。
But why can I not create an abstract method in a "normal", non-abstract class?
但为什么我不能创建抽象方法在“正常”，非抽象类？
ABSTRACT: Wine can not only give you health and beauty but also calories.
摘要：葡萄酒在带来健康和美丽的同时，还带来了卡路里。
ABSTRACT: Wine can not only give you health and beauty but also calories.
摘要：葡萄酒在带来健康和美丽的同时，还带来了卡路里。
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