那些车辆一律都很破旧，锈迹斑斑，布满凹痕。The vehicles are without exception old, rusty and dented.他把金属板上的一些凹痕敲掉了.He hammered out the dents in the metal sheet.地毯上放过落地灯的地方有个凹痕.There was a depression in the carpet where the lamp had stood....
In Jordan, in an step , cannons signal the end of Ramadan.在约旦, 为了庆贺斋月的结束,人们一反惯例地通过礼炮以示欢庆.Rifles and cannons volleyed on all sides.枪炮向各方面齐发.These fearsome beasts have small cannons , comparable to serpentines, mounted on ...
They hauled feedlot manure from the ranches to fertilize their fields.他们从牧场的饲养场拖走肥料去肥田.Many abandoned ranches are purchased or leased by other poultrymen.许多被放弃的牧场会由其他家禽监主收买或租用.After the harvest, the ranches seemed asleep...
John Stevenson is Reader in History at the University of Sheffield.约翰·史蒂文森是谢菲尔德大学的历史学高级讲师。The president and Stevenson had worked harmoniously over the last eighteen months.在过去一年半里,总统和史蒂文森一起工作是融洽的.We elected Mr. Stevenson...
Amphoteric monomer is prepared with acrylic acid , dimethylamine and chloroethanol by Mannich reaction.以丙烯酸、二甲胺、环氧氯丙烷为原料,通过曼尼希反应制得两性离子单体.Biological activities of amphoteric surfactants to higher or lower organisms were i...
R " is a replaceable function , e . g . acetoxy, methoxy, their acyloxy and alkoxy homologs or halo.R ” 是取化基,如乙氧基 、 甲氧基及它们的环氧和烷氧同系物或卤基.The results show that zinc acetate - stearic acyloxy has thermal stability and synerg...