变数和属性都代表可存取的值。
Variables and properties both represent values that you can access.
由一个用户仅仅是可存取的加密数据库文件指定了口令。
Encrypted database file that is only accessible by a user specified password.
如果您需要将资料传递至另一个元件进行处理,且要限制该元件可存取的资料数,这将十分有用。
This is useful if you need to pass data to another component for processing and you wish to limit how much of your data the component can access.
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