他示范如何修补车胎刺孔.He demonstrated how to mend a puncture.设计了一种金属孔板波纹填料用刺孔机,包括上、下辊轮, 刺辊, 槽辊, 减速系统.It includes the up and down rolling wheel , thorny roller, groovy roller, reducing gears....
The company, New England Electric, burns coal to generate power.新英格兰电力公司用煤发电。Most cities generate a complex brew of pollutants.多数城市都会产生各种物质混杂的污染物。In the 19 th century waterpower was widely utilized to generate electricit...
It would be unfair to Debby's family to speculate on the reasons for her suicide.猜测黛比自杀的原因对她的家人来说是不公平的。ROWLAND Researchers speculate stress may be the cause of the grim statistic.罗兰德研究者推测压力可能是这一可怕统计结果的原因.It's a...