It tells you that any attempt to try to specify, to localize the position of an electron in such a system is futile.

这说明你试着任何尝试关于，使一个电子在这样一个系统中,确定其明确的位置是没有意义的。

麻省理工公开课 - 固态化学导论课程节选

Be careful, and this is going to be especially complicated and confusing when we get to quantities that have a more obscure meaning like entropy.

大家要小心，如果需要测量的物理量,如熵，没有很明确的意义,那么着可能变得很复杂。

麻省理工公开课 - 热力学与动力学课程节选