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李大爷60多岁了,近日发现自己勃起需要的时间越来越长,他想,这是不是勃起功能障碍呢?随着年龄的增长,性功能也和其他生理功能一
Uncle Li more than 60 years old, recently found his erectile need longer and longer, he thought, this is not erectile dysfunction? With age, sexual function and other physiological functions of a