Secondary hypogonadism can be due to hypothalamus or pituitary gland dysfunction; either from an inability to produce gonadotropin-releasing hormone or luteinizing and follicle stimulating hormones, or suppression from other hormones, like prolactin or thyroid hormone.

继发性性腺功能减退症可由下垂体功能障碍导致，既可能是促性腺激释放激、黄体生成和卵泡刺激的生成能力低下，也可能是以上激的分泌受到了其他激的抑制，例如泌甲状腺激。

And the hormone prolactin is connected with lactation, which is the production of milk by mammals.

催激与泌有关，它是哺动物分泌汁的过程。

He talked about the hormone called prolactin which he said was connected to lactation.

他谈到了一种叫做催激的激，他说这种激与泌有关。

Also in lactation, hormone levels increase in response to nursing, which causes an increase in milk production.

同样在泌过程中，激水平会随着哺的进行而升高，从而导致泌量的增加。