There were words in there--they said something--of course, we cannot guarantee that they won't go up in value but historically they have always done it or something like that.

他们在文中吹嘘...当然,我们不能保证金币不会升值,但金币的历史行情趋势始终向上

耶鲁公开课 - 金融市场课程节选

But also unlike n, l cannot have just any value, we can't go into infinity.

但不像n，l，不能取所有整数，不能到正无穷。

麻省理工公开课 - 化学原理课程节选