对于组，可以将组的名称作为特征属性，因为对于这两个库来说，它是惟一标识符。

For groups, you can take the name as the characterizing attribute, as it is the unique identifier for both repositories.

youdao

毫无疑问，统一资源标识符(uri)是基于Web的应用程序的最重要特征之一。

Universal Resource Identifiers (URIs) are, without question, one of the single most important characteristics of Web-based applications.

youdao

这种由加拿大造币公司和锡克拜（SICPA）产品安全公司设计和生产的税票所具有的安全特征，与货币上印制的标识符十分类似。

The stamp, which was designed and produced by the Canadian Bank Note Company and SICPA Product Security, contains security features much like the identifiers stamped on money.

youdao