You still have a root node, A, which points to a node B to the left and another node B to the right.
您仍然有一个根节点A，它从左边指向一个节点B，从右边指向另一个节点 B。
Once Node B takes over the request, in case Node A breaks down because of a fatal error, the original Web site logo is used.
如果NodeA因为致命错误而停机，而 Node B接收到了该请求，那么仍将使用原始的Web站点徽标。
Once Node B takes over the request, in case Node A breaks down because of a fatal error, the original Web site logo is used.
如果NodeA因为致命错误而停机，而 Node B接收到了该请求，那么仍将使用原始的Web站点徽标。
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