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男性內部性器官

男性內部性器官由產生激素和精子的睾丸、輸送和儲藏精子的管道系統和其分泌物成為射精後精液組成部分的附屬器官所組成。

The Internal Sex Organs

The male internal sex organs consist of the testicles which produce hormones and sperm, a system of ducts which transport and store the sperm, and some accessory organs whose secretions become part of the ejaculated semen.