No Beginning No End

There is a not a lot of science behind these models other then taking an iterative approach; there is no beginning and no end.

这些模型的背后不是采用了许多科学技术，而是采用了迭代的方法；没有开始和结束。

It had no beginning and no end.

它没有开始也没有结束。

"We find no sign of a beginning," he wrote, "no prospect for an end." His colleague and friend John Playfair commented that "the mind seemed to grow giddy by looking so far into the abyss of time."

“我们没有发现开始的标志，”他写道，“也没有发现要结束的迹象”，他的同事兼朋友约翰·普莱·费尔评论说，“向时间的深渊里这样遥望让人几乎晕眩了。”