前列腺
前列腺是一个硬实的、栗子般大小的圆形结构。其实质有尿道和早前描述过的射精管穿过。前列腺会持续地产生分泌物，少许会随着尿液而流失，有些则构成精液的大部分。在一些老年人，前列腺肥大，使尿道前列腺部受到压迫，从而排尿困难。这种病症可能需要动手术。
The Prostate Gland
The prostate gland is a firm, round body about the size of a chestnut, and it lies directly below the bladder. It is traversed by the urethra as well as the two ejaculatory ducts described earlier. The prostate constantly produces secretions. Some of these are passed off with the urine. Others make up the greater portion of the semen. In some older men, the prostate gland enlarges, causing pressure on the enclosed part of the urethra and thus making urination difficult. In these cases, surgery may become necessary.
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