热力学定律the laws of thermodynamics热力学是很难教的一门课。Thermodynamics is a hard course to teach.为了作到简单明白, 我们暂不考虑热力学问题.To maintain clarity and simplicity, we leave all thermodynamic considerations aside....
Sandra was determined to become a doctor and her persistence paid off.桑德拉决心成为医生，她的坚持取得了成功。Tullio has been modelling for Sandra for eleven years.图利奥已为桑德拉做了11年的模特儿。I don't want to hear the sordid details of your relat...