write-back-buffer 写回缓冲
You could even just use a single pointer and write data back into the buffer you got it from, although this might be a nuisance to program for on the other end.
您甚至只需要使用一个指针并将数据写回到读取数据所使用的缓冲区中即可，不过这对于另外一端的编程来说可能有些麻烦。
Posting Buffer: If you are a blogger or write articles for publication, it’s always a good idea to have an extra post or two in your back pocket.
写作：假使你是一个博客或者专栏写作者，那么，多准备在你的信封后1-2篇文章是一个不错的想法。
Buffer Write: Number of pages modified and sent back to the buffer pool.
Buffer Write：修改并发送回缓冲区池的页面数量。
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