Because, by default, all caches have entries, modifying this has no effect unless you delete the cache entries later on in the file.
因为默认情况下，所有的高速缓存都有入口，除非您稍后在文件中删除某些高速缓存的入口，否则修改它是没有任何作用的。
The new software will also delete the location data stored in the phone’s cache when the user turns its location services off.
在当用户关闭了定位功能以后，新的软件还将会删除储藏在手机中缓存的定位数据。
I still need to periodically delete my front page from the cache if I ever want that page to expire.
我还是需要定期地从缓存中删除前页，这样我才能使该页期满终止。
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