每一个超限的一致多重性,即每一个超限集合,必须有一个确定的阿列夫作为其基数。
Curiosity is the driving force behind all scientific discoveries.
对于那些没有研究过数学的人来说,有些事情似乎是难以置信的。
The severe morals of the early Romans produced a race of men who were neither superstitiously devout nor philosophically skeptical.