His doctoral dissertation on differential equations connected itself with existence theorems.他论述微分方程的博士论文涉及到存在理论.He wrote his doctoral thesis on electromagnetism.他写有关电磁的博士论文.He was involved in writing his doctoral disser...
女粉丝冲破保安的阻拦，撕扯他的衣裳。Female fans fought their way past bodyguards and tore at his clothes.成群结队的小青年阻拦消防部门灭火。Crowds of youths prevented the fire service from dealing with the blaze.狗能够阻拦不受欢迎的闯入者.Dogs can deter unwelcome intru...