通常而言，许多应用程序都可以通过调优以下三个核心区域实现一定程度的性能改进：J VM、线程池和连接池。
In general, a large number of applications will realize some improvement from tuning in three core areas: the JVM, thread pools, and connection pools.
气象预告警告到，闪电在核心区域的辐射范围达到了10英里，而有的时候甚至是再不下雨的情况下发生的。
Forecasters stress thunderstorms can shoot lightning up to 10 miles from their cores, even into areas where there might not be rain.
将一足抬离地面，身体核心区域的肌肉用力，并保持身体中正。
Lift one foot off the floor keeping your core engaged and spine in neutral.
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