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有男性的整个生命过程中,有一位起着很重要作用的“角色”,它就是睾丸。它像两颗“栗子”的形状,“安居”在阴囊里左右各一。成年男子的睾丸,每个约长4～5厘米、宽2.5厘米,前后直径3厘米,平均重约15克。睾丸里有三位身兼要职的“兄弟”,它们影响着人体的生长和生育。最先出场的
There is a “role” that plays a very important role throughout the life of a man. It is the testicle. It resembles the shape of two “chestnuts,” and “home” is about one in the scrotum. Adult man’s testicles, each about 4 to 5 cm long and 2.5 cm wide, before and after the diameter of 3 cm, an average of about 15 grams. There are three “brothers” in the testicles who hold high positions, which affect the growth and birth of the human body. First appearance