主要依靠B超检查判定胆囊的病变情况.Rely mainly on B - ultrasonography to determine gallbladder lesions.目的提高对胆囊切除术后残余胆囊的认识,做出正确诊断和治疗.Objective To improve the diagnosis and treatment of residual gallbladder disease after cholecystectomy....
Uncertainty is a discouragement to investment.不确定性令投资者裹足不前。He persevered despite discouragement from those around him.尽管周围一片劝阻声，他还是锲而不舍。an atmosphere of discouragement and despair灰心绝望的气氛...
...open sewers.裸露的下水道The sewers collected sewage and storm runoff and discharged it, untreated, into the harbour.污水和暴雨径流汇入下水道后被直接排入海港。...the muck and mire of sewers and farm- yards.下水道和农家庭院的污垢和烂泥Once a year they have to ...