adj.能算的；可计算的；[语]可数的
However, not all infinite sets are countable. 无限集合并不都是可数的。
The world prototype in the literature is countable, a prototype can spread out the numerous a topic constantly. 摘要世界文学中的原型是可数的，一个原型可以不断地衍生出无数个主题。
adv.无缘无故地
adv.可辩解地；可说明地
