RAMBack 导致 Firefox 发出一个释放内存的内部通知（否则这些内存将用于提高性能）。
RAMBack causes Firefox to issue an internal notification to free up memory that is otherwise held for performance purposes.
禁用管道意味着需要应答每个请求，在下一个请求发出前需要释放掉上一个请求所建立的连接。
No pipelining means each request has to be answered and its connection freed up before the next request can be sent.
同时，他说，睡眠不足会使身体释放更多的生长激素释放多肽和瘦素，前者会发出饥饿信号，后者则会告诉身体已经吃饱。
At the same time, Breus says, sleep deprivation causes your body to release more ghrelin, the hormone that signals hunger, and less leptin, the hormone that tells your body it's full.
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