这就是所谓的催化裂化.It is known as catalytic cracking.裂化是使较重的低挥发性的碳氢化合物分裂成较小分子的化学分裂.Cracking involves the chemical breakdown of higher, less volatile hydrocarbons into smaller molecules.FCC(流化催化裂化 ) 是炼厂生产汽油的主要方法之一.The Fluid Catal...
Investment could dry up and that could cause the economy to falter.投资可能会中断，而这会引起经济衰退。He bought an investment property for $100,000 and put down $20,000.他以10万美元买下一处投资性地产，并支付了2万美元的定金。The job needs someone with a good track...
博物馆里陈列着许多展览品.There are many exhibits on display in the museum.展览品包括全世界的间谍小工具和间谍故事.Exhibits include gadgets and spy stories from all over the world.如果这样的话, 我这里有一些复制展览品,你可以购买.If so, I have some replica exhibits here that y...
She's got into Durham to read law.她考上达勒姆大学学法律.Why don't you come to stay with us next time you visit Durham?下次来达勒姆就住在我们这儿好 吗 ?Durham has much to offer the camera-toting visitor.达勒姆景点众多，对携带相机的游客来说大有可拍。...Humphre...
be censorious of petty failings对细微的不足非常挑剔a censorious or denunciatory nature挑剔或谴责性质His treatment of him is sympathetic rather than readily censorious.他对他的态度是同情而并非一味批评.Despite strong principles he was never censorious.虽然他...