retrogradeadj.倒退的；退步的；逆行的；衰减的v.倒退；退化；逆行adv.后退地retrograde intubation逆行导引插管retrograde conditions退变条件retrograde urethrogram逆行尿道造影(照)片retrograde ureterogram逆行性输尿管造影(照)片retrograde examination逆行检查retrograde peristalsis逆蠕动retrograde pyelography逆行肾盂造影retrograde ejaculation逆行性射精,倒行射精,逆向射精Retrograde island flap逆行岛状皮瓣retrograde propagation逆行性传播