You'll have to install a plugin from their site.

您需要从他们的网站上安装一个插件。

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To install a plugin, the following are the general directions to follow.

安装一个插件，以下是一个需要遵循的总体指导。

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In this way, you can simplify your Hadoop installation drastically; all you need is, (1) go to Hudson plugin update center, (2) install a Hadoop plugin, and (3) restart Hudson.

用这种方法，你可以大幅度地简化Hadoop的安装；你所要做的就是，(1)登录Hudson插件升级中心，(2)安装一个Hadoop插件，还有(3)重启Hudson。

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However, like with most video-chat services, users will need to install a plugin before they can use it.

CNN: Facebook adds Skype video chat feature

You'll have to install a browser plugin to get your hit of pop-up cartography, but Google Earth addicts should be suitably impressed.

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On Thursday, Oracle released an update for its ubiquitous Java plugin that patches a serious set of security issues, ones that allowed cybercriminals to install malware through invisible downloads when users visited rigged websites.

FORBES: Oracle Quietly Releases Fix For Serious Java Security Bug--Months After It Was Reported