Hugh and John were exchanging faintly barbed courtesies.休和约翰正说着带有相互挤兑意味的客气话。She heard Tom exchanging good-natured banter with Jane.她听见汤姆和简互相打趣。He enjoyed exchanging banter with the customers.他喜欢和顾客开玩笑。...
高炉的温度急剧上升.The temperature of the blast furnace raced up.高炉的有效运转需要大量的水.It requires very large amount of water for its efficient operation.高炉的效率提高了一倍多.The efficiency of the furnace more than doubled....