A black Mercedes screeched to a halt beside the helicopter...一辆黑色的梅赛德斯轿车在直升机旁嘎的一声刹住了。He slammed on the brakes and the car juddered to a halt.他猛踩刹车，汽车在剧烈震动中停下来。The car came to a halt just in time to prevent an accident.汽车...
Gene mutations are alterations in the DNA code.基因突变是指DNA密码的改变.Any person abruptly starved shows alterations in intermediary metabolism of protein, carbohydrate, and fat.任何人突然遭到饥饿,就会出现蛋白质 、 碳水化合物和脂肪的中间代谢的改变.In 1992, these...
The synthesis, evaluation and field application of 2 - acrylamido - 2 - methylpropanesulfonic acid ( AMPS ) copolymers are introduced.介绍了 AMPS 聚合物的合成 、 评价和现场应用情况.The good effectiveness of AMPS copolymers had been demonst...
Kenya's population is growing at 4.1 per cent per annum.肯尼亚人口正以每年4.1%的速度增长。The agency placed about 200 secretaries per annum.该代理机构每年大约安排200份秘书工作.Interest is paid at the rate of 1 % per annum at present.目前每年的利率是1%....