But this is a compound, right, it has some non-zero heat of formation from the elements. So is water, right?

但这是种化合物，对吧？,它具有非零的生成热,水也是一样，对吧？

麻省理工公开课 - 热力学与动力学课程节选

And our other reference point is the triple point of water - reference points become zero Kelvin, absolute zero, and the triple point.

而使用绝对零度,它与压强无关,是最低的温度，另一个参考点是水的三相点。

麻省理工公开课 - 热力学与动力学课程节选