Secondly,the graph also shows that there were two stages of changes in the average age at first marriage for both men and women: from 1900 to 1940 and from 1950 to 1987.

• 其次，图表还显示，男性和女性的初婚平均年龄有两个阶段的变化：1900－1940年为第一阶段，1950－1987年为第二阶段。