尿道扩张联合开放手术或腔内电切术是前列腺切除术后排尿困难较为有效的治疗方法.Urethral dilatation combined open operation or transurethral electroresection is an effective means to dysuria after prostatectomy.两个与心脏相连的主静脉叫做大静脉或腔静脉.The two main veins that connec...
One end of the see - saw goes up while the other end goes down.跷跷板一头起来,另一头就下去.Prices see - saw according to demand.物价随需求变化而反覆涨跌.Changing demand causes a see - saw in prices.需求不断变化造成价格反覆涨跌....