The realm of geographical data sets and GIS applications may seem a bit difficult to understand in a world that talks about open source and global environmental phenomena.
在谈到有关开源和全球环境现象时，很难让人联想到地理数据集和GIS应用程序领域。
2
A security realm, as the name suggests, corresponds to a realm or scope of data to which the authentication information belongs; that is, the domain to which the authentication information applies.
安全领域，顾名思义，对应于身份验证信息所属的域或者数据范围；即身份验证信息所适用的领域。
3
Before the directory server can be used in an LDAP realm, authentication data needs to be added to the directory server.