必须为这些名称定义新的内容元素。

You must define new content elements for these names.

youdao

对于某些文档，可能需要内容元素的新类型。

For some documents, you might need new types of content elements.

youdao

dita域收集了一组用于某些目的的专门化内容元素。

A DITA domain collects a set of specialized content elements for some purpose.

youdao

And there's a lot we can explain by talking about what we see in the periodic table in terms of what different trends are in grouping different elements in different spots within the periodic table.

我们可以解释很多,通过讨论元素,周期表中的内容,按照各种不同的规律,将周期表中不同位置的元素分组归类。

麻省理工公开课 - 化学原理课程节选

What's new in theory is the element of skepticism that literary criticism by and large which is usually affirming a canon of some sort doesn't reflect.

这新内容就是怀疑主义元素,它是文学评论,所不具备的,文学评论总是坚持某种原则。

耶鲁公开课 - 文学理论导论课程节选

We can look at it here; we looked at append, which added things to lists, we looked at delete, deleting things from a list.

看看这儿，append方法给数组，增加了一些内容，我们还学习了，如何删除数组中的元素。

麻省理工公开课 - 计算机科学及编程导论课程节选