primary是一个英语单词，它的意思是“最初的，最重要的，主要的”。这个单词来源于拉丁语的"primarius"，意思是“最初的”。

下面是一些例句：

The primary reason I decided to become a teacher is because I want to help children learn and grow. (我决定成为一名教师的主要原因是我想帮助孩子们学习和成长。)

The primary function of this device is to measure temperature. (这个设备的主要功能是测量温度。)

My primary concern is the safety of my family. (我最担心的是我家人的安全。)