A signal triggers the pituitary gland to release the hormone gonadotropin.

这个信号会促使脑垂体释放出促性腺激素。

These gonadotropin hormones then stimulate the gonads to produce sex specific hormones.

这些促性腺激素随后刺激性腺生成性别特异性激素。

And that leads to low levels of the gonadotropin hormones, luteinizing and follicle-stimulating hormones, and low levels of gonadal function.

而这会导致促性腺激素（如促黄体生成素和卵泡刺激素水平）降低，以及性腺功能水平降低。

Though there are different causes which result in different levels of gonadotropin hormones, they all ultimately result in hypogonadism and a deficiency in testosterone or estrogen and progesterone.

尽管青春期延迟的病因很多，会导致促性腺激素水平各不相同，但最终的结果都是性腺功能减退以及男性睾酮或女性雌激素和孕酮的缺乏。

When gonadotropin-releasing hormone reach the pituitary gland, it stimulates cells in the anterior pituitary, called gonadotrophs, to release gonadotropin hormones: luteinizing hormone and follicle-stimulating hormone which then enter the blood.

当GnRH到达垂体时，可刺激垂体前叶的促性腺激素细胞，释放促性腺激素黄体生成素（LH）和促卵泡生成激素（FSH），两者随后进入血液。

The first is primary hypogonadism which is caused by dysfunction of the gonads - for example, the gonad's receptors may not respond to gonadotropin hormones, or the gonads might not have healthy cells that are capable of producing hormone.

一是原发性性腺功能减退，由性腺功能障碍引起，例如，性腺受体对促性腺激素不敏感或者性腺内没有能够产生性激素的健康细胞。