Such cuestas may be either erosional escarpments or fault scarps.这类单面山既可以是侵蚀山崖也可以是断层崖.The escarpments are sustained by rock.这些垅岗由岩石构成.Danxia landform is the continental red bed landform with escarpments.丹霞地貌是指有陡崖的陆相红层地貌....
我们必须找到从页岩中采油的经济方法.We must find economical methods for extracting oil from shale.我们可以从页岩中提取石油.We can extract oil from shale.这个地区的灰岩 、 砂岩和页岩都是很柔软的.The limestone, sandstone and shale of this area were soft....
If you build more plastics into cars, the car lasts longer.如果汽车采用更多塑料元件，寿命会更长一些。New Japanese cars averaged 13 km to the litre in 1981.1981年，新型的日产汽车平均每升汽油能跑13千米。The museum will have a permanent exhibition of 60 vintage ca...