Gender is the set of social and psychological characteristics that a society considers proper for its males and females.

性别是社会认为适合其男性和女性的一组社会和心理特征。

(2) The relationship between the community's income and what it can be expected to spend on consumption, designated by D1, will depend on the psychological characteristic of the community, which we shall call its propensity to consume.

(2) 社区收入与预期消费支出之间的关系，由 D1 表示，将取决于社区的心理特征，我们称之为消费倾向。