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...
The paintings she produced in those months won undivided admiration.她那几个月里创作的画作备受推崇。Adults rarely give the television their undivided attention.成年人很少会专心地看电视。He has my undivided loyalty.我对他忠心耿耿。...