1. 性；性别
    A person's gender is the fact that they are male or female.

    e.g. Women are sometimes denied opportunities solely because of their gender.
           妇女有时仅仅因为性别而无法获得种种机会。
    e.g. ...groups that are traditionally discriminated against on grounds of gender, colour, race, or age.
           长期以来因为性别、肤色、种族或年龄而遭歧视的人群

2. （统称）男性，女性
    You can refer to all male people or all female people as a particular gender.

    e.g. While her observations may be true about some men, they could hardly apply to the entire gender.
           虽然她的评论就某些男人而言可能是正确的，但绝不适用于所有男性。
    e.g. ...the different abilities and skills of the two genders.
           两性具备的不同能力和技能

3. （语法中名词、代词或形容词的）性
    In grammar, the gender of a noun, pronoun, or adjective is whether it is masculine, feminine, or neuter. A word's gender can affect its form and behaviour. In English, only personal pronouns such as 'she', reflexive pronouns such as 'itself', and possessive determiners such as 'his' have gender.

gender的反义词

    e.g. In both Welsh and Irish the word for 'moon' is of feminine gender.
           在威尔士语和爱尔兰语中，表示“月亮”的词是阴性的。