Her ankle caught on a root, and she almost lost her balance.她的脚踝被树根绊了一下，差点摔倒。The forces of National Socialism were transforming Germany root and branch.纳粹主义势力当时正在彻底改变德国。They were treating symptoms and not the root cause....
Right now, Hockaday's prototypes put out only a few milli - watts of power.现在, 霍克蒂的燃料电池原型只能输出几毫瓦的电力.Industrial designers sketch and create rough prototypes from foam board and other materials.工业设计者会拟出草图,用泡沫板和其他材料创建出...