The methods employed are old-fashioned and uneconomical.采用的方法很老套，没什么效益。Aspheric optical parts manufacturing is an acknowledged difficulty and it is uneconomical.非球面光学零件加工是当前国内外公认的难题.The methods employed are old-fashioned...
黛西的声音促使我们站了起来,走到外面炽热的石子汽车道上.Daisy's voice got us to our feet and out on to the blazing gravel drive.篮球篮框不可设置在汽车道上.Basketball hoops may not be installed on a driveway.我们反对建造那条汽车道.We opposed the building of the motorw...
当我们要求进一步参观时却被拒绝了。实际上，我们是被一些带枪的人护送离开的。When we asked to see more we were refused. Indeed we were escorted away by men with guns.带枪的刺客说. “ 法布里吉奥, 迈克尔-考利昂要我问候你. ”The gunman said, " Fabrizzio, Michael Corleone sends you his r...
a level substratum水平的底层His recreation of the city is credible, with a substratum of fact to bolster the fiction.他对该城历史的再现是可信的，虚构的小说情节隐念着一些事实作为支撑。...its deep substratum of chalk...深厚的白垩地层The story has a substratum of trut...