So, in this function, we are using the back chain pointer, the link register save area, and one local variable.

所以，在这个函数中，我们使用了回链指针、链接寄存器保存区和一个本地变量。

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Each stack frame holds a pointer to the previous stack frame (called the back chain pointer), as well as a space for return addresses for when it calls other functions.

每个堆栈框架都有一个指向前一个堆栈框架的指针(称为回链指针)，还有一个当它调用其他函数时用于存放返回地址的空间。

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After the request works its way through the chain and is processed by the server, a response is sent back through the chain in reverse order.

在这个请求设法通过过滤器链并被服务器处理之后，一个响应将以相反的顺序通过该链发送回去。

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The PDE immediately switched over to a back-up chain, and it also shut itself down just in case the anomaly was a problem in the electronics rather than in the physical system itself.

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Instead of a months-long back-and-forth process, Marshall-Chapman speeds up the chain of command.

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Starting this week, the 110-year-old department store chain will bring back some of the sales that it swore off last year, the Associated Press reports.

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