installed options module 装配可选择的模件
MB disk space, plus additional space for the selected installed options.
MB的硬盘空间，选择其他安装选项还需另外的空间。
You might also need to tweak the tar options specified here if your system doesn't have GNU tar installed.
如果您的系统中没有安装gnu的tar，那么您可能还需要调整其中的tar选项。
When you have everything installed, you should be able to see new options in your Firefox browser by right-clicking elements in any Web page.
一切安装就绪之后，通过单击任何We b页面中的元素，您应该能够在Firefox浏览器中看到新选项。
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