Her secretarial work helped to augment her husband's income.

她的秘书工作增加了她丈夫的收入。

He does some odd jobs during his holidays to augment his family income. /He helped support the family by doing odd jobs during his holidays.

他假期打些零工贴补家用。

Augment one's income by hard working

靠努力工作增加收入

Both husband and wife go to work inorder to augment the family income.

很明显,这句话的意思是“为了增加家庭收入,夫妻双双都去工作”.