能从其他废料中分离出可重复利用成分是很关键的。The ability to separate out reusable elements from other waste is crucial.捷利康公司终于从其母公司帝国化工集团中分离了出来。Zeneca was at last demerged from its parent firm, ICI.研究人员已经从罂粟种子里分离出一种新的蛋白质。Researchers have isol...
For many years sundials have cast their spell over scientists and mathematicians...多年来，日晷一直吸引着科学家和数学家们。Churchyards often have sundials in them.教堂大院里通常设置日晷.Sundials have been around for centuries because are accurate and ...
如果使用得当，避孕套是很有效的避孕手段。Condoms are an effective method of birth control if used with care.服务项目包括避孕建议和健康检查，并且免费提供。The service covers contraceptive advice and health checks, and is available free.服用避孕药是最有效的避孕方法。The pill is th...
The stairway carpet is so frayed it threatens to unravel.铺在楼梯上的地毯磨损得很厉害，都快散了。What moves him is the desire to unravel the mysteries of nature.推动他们的还是解开自然之迷的愿望.There is still a good deal to unravel.还有不少问题要澄清....