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.

如果我想让某人加入队列，也就是让他排到队伍的尾，我遍历链表直到尾，然后修改那下一节点的针，使其新加入的人。

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副本正从不同的插件和主题中被添加到页面中。