On Widgets screen there is one untranslatable sentence…

On Widgets screen there is one untranslatable sentence in Inactive Widgets area: Drag widgets here to remove them from the sidebarSidebar A sidebar in WordPress is referred to a widget-ready area used by WordPress themes to display information that is not a part of the main content. It is not always a vertical column on the side. It can be a horizontal rectangle below or above the content area, footer, header, or any where in the theme. but keep their settings.
Please check this issue.

#core, #request