principal

释义

n. 校长, 首长, 本金, 主犯, 资本, 委托人\na. 主要的, 最重要的, 首要的 principal component 主成分；[化]知组分 principal component analysis 主成分分析 principal and interest 本利，本金及利息

例句

a small school with just three teachers and the principal

只有三位老师和一位校长的小型学校

His principal reason for making the journey was to visit his family.

他那次旅程的首要目的是探访家人。