擦窗户用英语可以说作 "to clean windows" 或 "to wipe windows." 来源于英文单词 "clean" 或 "wipe"，分别表示清洁或擦拭。例句：

I need to clean the windows before the guests arrive. (我需要在客人来之前擦窗户。)

Please wipe the windows with this cloth. (请用这块布擦窗户。)