I would always inspect WordPress sites and find multiple copies of jQuery that were being enqueued into the page from different plugins and themes.

我总是会检查WordPress站点，并发现有多份jQuery副本正的插件和主题中被添加到页面中。

If we want to enqueue someone, that is, add them to the line, we have to traverse down the linked list until we hit the end, and then change that next pointer to point to the new person.

如果我想某人入队，也就是添加到行中，我必须向下遍历链表直到到达末尾，然后 next 指针更改为指向新人。