这种零热量的茶饮料对很多方面都有益：可以增进心脏的健康，预防多种癌症，坚固骨骼与牙齿，还可以修护肌肤。

Available in myriad varieties, the calorie-free brew promotes heart health, staves off several types of cancer, strengthens bones and teeth, and protects the skin.

youdao

我们中几乎三分之二的人每周吃一次快餐，而且我们每天近25%的热量来自零食。

Nearly two thirds of us grab fast food once a week, and we get almost 25% of our daily calories from snacks.

youdao

近三分之二的人每周吃一次快餐，我们每天摄入的热量中有近25%来自零食。

Nearly two-thirds of us grab fast food once a week, and we get almost 25% of our daily calories from snacks.

youdao

It's not going to be zero this time because we have non zero heat exchange between the system and the environment, right.?

热力学量，但是现在让我们看一下,我们的特殊函数，这次它不会是零,因为系统与外界的热量交换并不是零，对吧？

麻省理工公开课 - 热力学与动力学课程节选

q Work is zero. Delta u is w plus q, work plus heat. This is zero, this isn't.

功是零，△U是w加，功加上热量，这个是零。

麻省理工公开课 - 热力学与动力学课程节选

Here's heat exchanged in pathway A and in pathway B heat is zero, and in pathway C, Cv here is qC it's Cv T1 minus T2.

这是qA，这是路径A上的热量交换,路径B中的热量交换是零，而在路径C中，这是qC，它是。

麻省理工公开课 - 热力学与动力学课程节选