Now, we saw before, or really I should say we accepted before, that for an ideal gas, u was a function of temperature only.

我们已经看到,或者说我们已经接受这样一个事实，即理想气体的内能只和温度有关。

麻省理工公开课 - 热力学与动力学课程节选

Could you recommend some museums in the U.S that we should visit?

你能推荐些我们在美国应该参观的博物馆吗？

关于购买艺术品 - SpeakingMax英语口语达人

The food guide pyramid was the government's effort, put through by the U.S. Department of Agriculture about what people should eat optimally.

食物金字塔是政府努力的结果,它是由美国农业部提出的,关于人们最佳饮食结构的建议

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Delta u is zero, right? It should be completely second nature.

u=0，对吧？这应当,成为本能的答案了。

麻省理工公开课 - 热力学与动力学课程节选