We fanned out from the farmhouse in twos and threes.我们三三两两从农舍散去。They left by twos and threes.他们三三两两地离开.The students are coming into the classroom by twos and threes.学生们正三三两两地走进教室....
通用柴油动力火车头将车厢转轨到了4号月台。The GM diesel engine shunted the coaches to Platform 4.19世纪船舶设计和船舶动力领域发生了重大的变革。The nineteenth century witnessed a revolution in ship design and propulsion.风能作为动力的成功是对可再生能源一次立见分晓的检验。The success of win...