Instead, it lets you install Web apps, built out of standard Web coding, that can, in theory, run offline.

Chrome OS采取的做法是让用户安装Web程序，这些程序由标准的Web代码构成，理论上能够离线运行。

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An alternative to this pattern is using the always-offline pattern and coding the application to synchronize immediately in the background when changes are made to the local database.

该模式的另一种选择是使用始终脱机模式并编写应用程序，当本地数据库发生更改时，将在后台立即进行同步操作。

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