变数和属性都代表可存取的值。

Variables and properties both represent values that you can access.

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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.

youdao

现今的资料存取控制可精细到个别资料格中的资讯，以便为重要资料及机密客户资讯，提供更严密的安全防护。

Access to data can now be controlled down to an individual cell of information, providing greater security for your critical data and sensitive customer information.

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