The objective is to evaluate the electrocoagulation for varicose veins of the lower extre mities.目的是评价电凝法治疗下肢静脉曲张的方法及疗效。
The flat was seven flights up, and Winston, who was thirty-nine and had a varicose ulcer above his right ankle, went slowly, resting several times on the way.温斯顿住在七层楼，可他三十九岁，右脚脖子又有处静脉曲张。 他只好慢慢往上爬，路上还歇了好几气。
