案例还包含一组元数据，即关于案例本身的信息。

The case also contains a set of metadata or information about the case.

youdao

可以把样式应用于一组元素，也可以应用于单一元素。

You can assign styles to elements as a group or individually.

youdao

II CE API 中的 Content 对象允许用户从内容项中检索一组元数据属性。

The Content object in the II CE API allows for a user to retrieve a set of metadata properties from the content item.

youdao

And I responded to at least one email about this issue, someone quite correctly said tuple are immutable, how can I change one?

我在不止一封邮件里回复了这个问题,一些人很明智，知道元组不可变,但是疑问怎么能去改变他们，我的答案是？

麻省理工公开课 - 计算机科学及编程导论课程节选

My answer is, you can't change one but you can create a new one that is almost like the old one but different in a little bit.

既然你不能改变元组,你可以新建一个跟原来的元组,大体上一致但有细微差别的元组。

麻省理工公开课 - 计算机科学及编程导论课程节选

And the nice thing is that there's a shared behavior there. Just as I can have tuples as an ordered collection of things, strings behave as an ordered collection of things.

共享的行为，就像元组是有序的元素序列,字符串也是有序的元素序列,因此我可以对字符串做同样的操作,我可以把它们连结起来。

麻省理工公开课 - 计算机科学及编程导论课程节选