Each time an instance of VS 2010 is opened, it automatically checks for updates to installed extensions.

每次你打开VS 2010的一个实例的时候，它就会自动检查已经安装的扩展的更新。

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Operating-system updates and patches should be installed on a regular basis.

应该定期进行操作系统升级和安装补丁。

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Alerts provide notification that new code is available, and updates are installed with a click of the mouse.

警报会发出新代码已可用的通知，只需单击鼠标就能安装更新。

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Our correspondent added that the back-up computer on the rover had previously been used to test software updates before they were installed on the main machine.

BBC: Mars rover

Because updates for Java software are installed on demand rather than automatically, there is a longer shelf-life for vulnerabilities.

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The privileged local administrator account that is created when Windows is first installed should only be used for sensitive administration chores such as installing updates and software and reconfiguring the host.

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