behind的近义词有：after, behind, at the back of,back, backward, hind, behind。下面这些词均有"在……后面"的含义：after和behind用来表地点时，前者强调的是顺序的先后，而后者侧重方向和位置的前后关系。请比较：The student sat after me.那个学生坐在我后面。(我坐在他前面)。The student sat behind me.那学生坐在我背后。a...
The bullet wound gangrened and had to be operated.枪伤腐烂了,必须动手术(切除).Vice gangrened large cities.罪恶使得大城市道德败坏.Objective To explore the way to preventing incisions infection of gangrened and perforated appendicitis.目的探讨预防坏疽穿孔...