In addition to this, the proximity of cached memory can yield performance advantages too.
此外，缓存内存的接近也能产生性能优势。
On the App Store, press any one of the five buttons along the bottom of the app 10 times in a row to clear the cached memory.
在应用商店，连续点击下方五个按钮中的任一按钮十次，可以清空缓存。
Cached memory is how much of the current usage is not currently being used, but is cached for performance reasons for future memory requests.
Cached memory是当前使用量(current usage)当中目前没有被使用，而是由于性能原因缓存起来用于将来的内存请求的内存。
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