性-人类性的基本层面
Sex - Basic Aspects of Human Sexuality

性特征的应用分类

为了日常生活中方便运用，我们可以将性特征区分为三类：

1. 初级性征，既外部性器官。性器官在出生的时候就已经呈现，借此，使我们确定一个孩子是男孩还是女孩成为可能。

2. 次级性征，既性的身体方面的特征。这些特征在青春期得到发育，而且进一步强化了男性与女性之间的解剖学方面的差异。

3. 第三级性征，既性的社会心理与心理品质特征。这些特征是作为一个性别成员和不作为另一个性别成员在被养育中形成的（例如：女人的迷人和可爱，男人的好斗等品质）。

初级性征和次级性征由生物因素来决定，它们造就了男人和女人。第三级性征由文化因素来决定，它创造了男人的阳刚或女人的阴柔。

初级和次级性征涉及到人是男人还是女人（既：一个性别或另一个性别的身体本质特征）；第三级性征涉及一个人的女性特质或男性特质（既：一个性别或另一个性别的社会心理本质特征）。初级和次级性征由生物因素所决定；第三级性征也有生物因素的基础，但更多地由人文因素所决定。

A Practical Classification of Sexual Characteristics

For the practical purposes of everyday life, one can distinguish between three kinds of sexual characteristics:

1. The primary sexual characteristics are the external sex organs. They are already present at birth and thus make it possible to determine whether a newborn child is a boy or a girl.

2. The secondary sexual characteristics are those physical features that develop during puberty and which further accentuate the anatomical difference between males and females.

3. The tertiary sexual characteristics are those psychological and social qualities that are nurtured in one sex and discouraged in the other (e.g. charm and sweetness in women, fighting spirit in men). 

The primary and secondary sexual characteristics are biologically determined, and they constitute a person's maleness or femaleness. The tertiary sexual characteristics are culturally determined, and they constitute a person's masculinity or femininity.

The primary and secondary sexual characteristics refer to a person's femaleness or maleness (i.e. the physical character typical of one or the other sex); the tertiary characteristics refer to the person's femininity or masculinity (i.e. the psycho-social character typical of one or the other sex). The primary and secondary characteristics are biologically determined; the tertiary characteristics also have a bioligical basis, but are largely determined by cultural factors.