"They have become something like people we know now, whereas before they were obscure,".

VOA: standard.2009.10.21

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

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