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勃起功能障碍(Erectile Dys-Function 简称 ED)是一种常见的男性疾病,可见于任何年龄的成年男性。其严格的定义为:阴茎持续不能勃起,或勃起不能维持,因而无法达到满意的性行为。
Erectile dysfunction (ED) is a common male disease that can be found in adult men of any age. Its strict definition is: the penis can not continue erection, or erection can not be maintained, and thus can not achieve satisfactory sexual behavior.