Having an extra X chromosome makes the testicular cells generate less testosterone, which is a hormone responsible for primary sex characteristics like development of the sex organs as well as secondary sex characteristics like height and body shape.

多一条X染色体让睾丸间质细胞的睾酮产量下降；睾酮这种激素不仅负责第一性征的发育，如性器官发育，也负责第性征发育，如身高和体形。

The decrease in sex hormones inhibits the development of primary and secondary sex characteristics during puberty.

性激素水平的下降了青春期第一和第性征的发育。

Less testosterone also suppresses testes maturation and sperm production as well as development of secondary male characteristics.

睾酮水平的下降还睾丸的发育和生精，男性第性征的发育也受。

They also direct secondary sex characteristic development like increased height, growth of pubic hair and breasts.

们也主导第性征的发育，如身高增加、阴毛与乳房生长。

Increased testosterone also leads to the development of secondary sex characteristics like growth of facial and pubic hair, increased height and muscle mass, and a deepening of the voice.

睾酮水平升高还导致第性征的出现，如面部和阴毛生长、身高和肌肉量增加，以及声音变低沉。

Secondary sex characteristic dysfunction includes a lack of facial hair, low muscle mass, and not developing a deep voice.

第性征的功能障碍包括缺乏面部毛发、肌肉量减少与不能变声为低沉的声音。

The increased production of sex hormones drives the development of primary and secondary sex characteristic that we see during puberty.

性激素生成的增加促进了青春期内我们见到的第一性征和第性征发育。

In Kallmann syndrome, there's an under-development of primary and secondary sex characteristics.

在Kallmann综合征中，第一性征和第性征发育不良。

Treatment is focused on hormone therapy which can stimulate puberty and the development of secondary sex characteristics.

治疗重点在于激素疗法，可刺激青春期和第性征的发育。

Secondary sex characteristics refers to any sex-specific physical characteristic that is not directly involved or necessary in sexual reproduction, like pubic hair and breasts, in females.

第性征是指其他所有性别特异的、而不直接与生育相关或在生育中不是必需的体征，例如阴毛和女性的乳房。

And then there are secondary sex characteristics, which develop at puberty and are not directly involved in reproduction, things like pubic hair, enlarged breasts or facial hair.

还有第性征，在青春期发育，但不直接参与繁殖，比如阴毛、乳房增大或面部毛发。

You have your internal sex organs, your hormone production, your hormone response and your secondary sex characteristics, like breast development, body hair, etc.

你拥有内在的生殖器官、激素、激素反应以及第性征，如乳房发育、体毛等。

Secondary sexual characters are highly variable, and such characters differ much in the species of the same group.

第性征是高度可变的，并且这种性征在同一群体的物种中差异很大。

The Tanner scale, or Tanner stages, is a predictable set of steps that males and females go through as they develop primary and secondary sex characteristics and become sexually mature.

Tanner量表或Tanner期可以用来预测男性和女性第一性征、第性征以及性成熟的发育历程。

Secondary sex characteristic dysfunction includes a lack of breast development and pubic hair.

第性征的功能障碍包括乳房发育障碍和阴毛的缺失。

The rule applies to males and females; but more rarely to females, as they seldom offer remarkable secondary sexual characters.

该规则适用于男性和女性； 但对女性来说更少， 因为她们很少提供显着的第性征。

I think it will be admitted by naturalists, without my entering on details, that secondary sexual characters are highly variable.

我认为博物学家承认第性征是高度可变的， 而无需我详细说明。

The term, secondary sexual characters, used by Hunter, relates to characters which are attached to one sex, but are not directly connected with the act of reproduction.

亨特使用的术语“第性征” 与附属于一种性别但与繁殖行为没有直接联系的特征有关。

The rule being so plainly applicable in the case of secondary sexual characters, may be due to the great variability of these characters, whether or not displayed in any unusual manner—of which fact I think there can be little doubt.

这条规则如此明显地适用于第性征， 可能是由于这些性格的巨大可变性，无论是否以任何不寻常的方式表现出来——我认为这一事实是毋庸置疑的。