Objective : To investigate the pathogenesis of the degenerative changes of the ligamentum flavum.目的: 探讨黄韧带退变的发生机理.Changes in the retinal arteries reflect the severity of systemic hypertensive disease.视网膜动脉的变化是全身高血压病严重性的反...
His best friend was killed by police under extremely questionable circumstances.他最好的朋友在极其可疑的情况下被警察打死了。Circumstances dictated that they played a defensive rather than attacking game.比赛形势决定了他们要打防守战而不是进攻战。In the circumstanc...