在2007年5月，Google发布了GoogleGears，一个浏览器插件，它允许web程序把数据同步到本地存储器，然后可以离线使用这些web程序。
In May of 2007, Google launched Google Gears, a browser plugin that allows web applications to synchronize data into a local data store and then allow web applications to function offline.
Zotero同时宣布它的插件带有一个网络组件，与同步特性紧密相关，可以自动的把你的数据备份到Zotero.org。
Zotero also announced a new online component to its plugin, which, in conjunction with the new synchronization features, automatically creates an online backup of your database on Zotero.org.
Zotero同时宣布它的插件带有一个网络组件，与同步特性紧密相关，可以自动的把你的数据备份到Zotero.org。
Zotero also announced a new online component to its plugin, which, in conjunction with the new synchronization features, automatically creates an online backup of your database on Zotero.org.
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