existence可数吗
existence是不可数名词，意思是存在，实在；
She conjectured the existence of a completely new species.
她推测有一个全新物种存在。
She felt estranged from her former existence.
她感到自己已脱离了过去的生活方式。
She contemplated the sterility of her existence.
她思量着自己空虚无聊的生活。
We led a poor but happy enough existence as children.
我们儿时的生活虽然贫穷却过得很愉快。
Pakistan came into existence as an independent country after the war.
巴基斯坦在战后开始作为一个独立的国家存在。
