Almost needless to say, versions of both { -brand-name-firefox } and { -brand-name-chrome } are available for the most popular desktop and mobile operating systems ({ -brand-name-windows }, { -brand-name-mac }, { -brand-name-linux }, { -brand-name-android }, { -brand-name-ios }).
毋庸讳言，{ -brand-name-firefox } 和 { -brand-name-chrome } 均有可用于主流桌面和移动操作系统的版本（{ -brand-name-windows }、{ -brand-name-mac }、{ -brand-name-linux }、{ -brand-name-android }、{ -brand-name-ios }）。