To meet demand for power , the dam actually pumps water back upstream and reuses it .

为了满足电力的需要，大坝实际上抽回上游的水并且重新利用。

If the runtime fills all the buffers before the application retrieves and releases a frame , the runtime discards the oldest frame and reuses that buffer .

如果在应用读取并释放一帧前，运行时已填满所有缓冲，运行时将丢弃最老的帧数据，重用缓冲。

The second is page output caching , which saves the output of page processing and reuses the output instead of re-processing the page when a user requests the page again .

第二种机制是页输出缓存，它保存页处理输出，并在用户再次请求该页时，重用所保存的输出，而不是再次处理该页。

A graywater system reuses water from sinks , showers , tubs , dishwashers and washing machines to water gardens and landscaping .

废水利用系统用洗碗池、浴室、浴盆和洗衣机的废水来浇灌花园和景观美化

If a user connection starts a transaction and disconnects before committing or rolling back the transaction , and a connection thereafter reuses the same thread , the previous transaction still stays open .

如果一个用户连接启动了一个事务并在提交或回滚事务前断开，并且随后的一个连接重用了此同一线程，则前一事务仍保持打开状态。