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....
Listen to the biography of Natalie Portman.听NataliePortman的传记.When Doctor Portman read this portion of the letter his voice faltered.读到信的这部分,波特曼博士的声音发抖了.Old Doctor Portman was one of the few who came from the venerable g...
We also recommend a full day optional excursion to the Upper Douro.我们还推荐去杜罗河上游的短途自选一日游。Wine has been produced by traditional landholders in the Alto Douro region for some 2,000 years.在葡萄酒的产区上杜罗,当地人酿酒的历史可以追溯到大约2,000多年前.Wi...
丝锥 、 铰刀 、 钻头 、 锯片 、 铣切刀具 、 磨光工具以及其它等等, 所有这些方面的片镀都是很成功的.Taps, reamers, drills, saws, milling cutters, burnishing tools, and so on, have all been successfully plated.可以看到德国人在丛林之间悠闲地用大镐和铁铣构筑防御工事.German figures could be seen...