这项书面调查共有647名男性和821名女性参加，他们都是年龄在49岁以下的已婚人士。

His written survey involved 647 men and 821 women aged up to 49, who are married.

youdao

这项书面调查共有647名男性和821名女性参加，他们都是年龄在49岁以下的已婚人士。

His written survey involved 647 men and 821 women aged up to 49, who are married.

youdao