primary duty

基本解释

Everyone has their primary duties and tasks; very true.
每个人都有他们的主要责任和任务，非常真实。
One of my primary duties at a job a long time ago involved addressing catalogs for an advertising school. I made this more fun by illustrating the envelopes based on the person's name.
很久以前，我曾经的一份工作的主要职责就是为一家广告学校编辑联系名录，我根据每个联系人的姓氏特点在信封上加上了一些插图，这让看似枯燥的工作感觉更有意思一些，最终我也因此获得了另外一些设计工作的机会。
Emphasize your most important responsibilities even if they weren't your primary duties.
着重强调你最重要的职责，即便这不是你最主要的职能。

Women bear children. Well, around that fact comes a whole set of rights and obligations and duties, primarily to the family that have to be primary.
女人要生孩子，好，围绕这个事实,衍生出一整套权利，责任和义务，这些主要是对家庭而言，家庭是首要目标。
普林斯顿公开课 - 人性课程节选

"Under the new regime, not least of the mother's primary duties was "to teach the child that he owed supreme respect, love, and obedience to his father.
NPR: Excerpt: 'Minders of Make-Believe'