Define the types of resource each embedded link identifies.
定义每个内嵌于链接标识中的资源类型。
2
Remember, you created a link for each resource.
记住，我们为每个资源都创建了一个链接。
3
[it] allows a website to display embedded content (such as photos or videos) when a user posts a link to that resource, without having to parse the resource directly.