Transactions requiring disk I/O, such as flushing dirty pages from the buffer pool or flushing logs from the log buffer, may wait.
要求磁盘 I/O 的事务，例如刷新缓冲池中的脏页或者刷新日志缓冲区中的日志，可能需要等待。
I could hear little noises, water running, toilet flushing.
我可以依稀听到些嘈杂的声音，水流声，冲厕所的声音。
Sam has lost interest in flushing underwear down the lavatory, I am pleased to say, but he still likes tipping shampoo down the drain.
不过我可以欣慰地说，Sam对把裤衩放在马桶里冲掉已经失去兴趣了。但他还是喜欢把洗发液往水池里倒。
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