n.头胎，长子，长女
adj.头生的（子女），初生的，第一胎生的

As the firstborn, she felt a sense of responsibility to set a good example for her younger siblings.
作为长女，她感到有责任为弟弟妹妹们树立好榜样。
The firstborn son in traditional Chinese culture often inherits the family business.
在中国传统中，长子通常会继承家族生意。
Being the firstborn, he was granted more privileges than his younger brother.
作为老大，他享有比弟弟更多的特权。
The parents doted on their firstborn child, spoiling her with attention and gifts.
父母对他们的第一个孩子宠爱有加，给予她无微不至的关注和礼物。
In some cultures, the firstborn daughter is expected to marry within the same community.
在某些文化中，长女被期望与同社区的人结婚。
The firstborn child in this family has always been expected to attend an Ivy League university.
在这个家庭中，长子或长女一直被期望能进入常春藤盟校就读。
The firstborn son was given the task of carrying on the family's ancestral traditions.
长子被赋予了延续家族传统的重要任务。
She felt immense pressure as a firstborn to excel academically and professionally.
作为长女，她在学业和职业上感到了巨大的压力，需要出类拔萃。
The firstborn often assumes the role of a caregiver for younger siblings when parents are busy.
当父母忙碌时，长子或长女通常会承担起照顾弟妹的责任。
In this family, the tradition is that the firstborn daughter will inherit the family's valuable heirlooms.
在这个家庭中，有个传统是长女将继承家族的珍贵传家宝。