The act or process of producing.

产生；发生。

A single succession in natural descent.

一代。

People of the same period.

同时代的人。

Progeny.

后裔。

Average difference in age between parents and offspring, in man, about 30 years.

两代之间的年龄差距(以人而言约30年为一代)。

Type of objects derived from a preceding type.

由旧型式变衍而来的一型事物。