马里兰 、 弗吉尼亚和卡罗来纳的种植园盛产烟草 、 大米和靛蓝类染料.Plantations in Maryland, Virginia and the Carolinas grow staple crops of tobacco, rice and indigo.麦蒂的女朋友, 桑迪, 是马里兰大学的大一新生.Matty's girlfriend, Sandy, is a freshman at Maryland.我先来一份...
' steel in this class is tough, ductile and easily machined. "这种钢强韧, 延展性好,而且容易加工.Shrinkage and dispersed shrinkage are the special waster of ductile iron.缩孔和缩松是球墨铸铁特有的废品现象.The metal is very hard and strong and less ...
欧几里德几何的唯一性与必要性已被公认.The common conclusion was the uniqueness and necessity of Euclidean geometry.观察表明,这种唯一性有例外的情况.Observation shows that there are exceptions to the deterministic behavior.机遇具有唯一性, 只给你一次, 不给你两次.Good luck h...