常见例句用作名词 (n.)Inspite of the various difficulties,Chengdao was develoed independantly into a megaton oilfield in a period as short as a few years.工程设计完全依靠自己的力量，克服了种种困难，在短短的几年内就将埕岛建设成为一个百万吨级的油田。 返回 megaton