他们不给农奴任何自由.They did not allow the serfs any freedom.(那时) 农奴主 有权任意打骂甚至杀害农奴.The serf - owners had the right to beat , abuse or even kill the serfs at will.中世纪, 农奴主和农奴在生活中是两个截然不同的阶级.In the Middle Ages, a lord and a serf had...
Try to buy wood that you know has come from a sustainable source.尽量购买来自可持续发展林的木材。The creation of an efficient and sustainable transport system is critical to the long-term future of London.建立一套高效稳定的交通体系对伦敦的长远发展意义重大。Rockw...
Objective To observe bone mass changes during convalescence after simulated weightlessness.目的观察模拟失重恢复期骨质的变化.After convalescence he had a relapse.他于痊愈之后,病又发作了一次.Most operations are successful and the patient progresses sm...
Quantitative analysis of protein adsorption was done by Bradford method.Bradford方法定量分析明胶、胶原和RGD多 肽的表面吸附量.I spent a lot of time in the early Eighties travelling between London and Bradford.八十年代初，我有很多时间穿梭于伦敦和布拉德福德之间。The fi...