essential information造句

1、These two maps hold the essential information for building authorization views.
这两个映射保存了用于构建授权视图的重要信息。

2、The first article of this series provided essential information on XML.
本系列的第一篇文章介绍了XML的基本知识。

3、They'll also learn essential information about living and working in the United States.
他们还将学习必要的资料，生活和工作在美国。