The main deviceisplaced at theback of the automobile, whereas the sub device serves asa baton,whichyou canwind down the window anduse to warn cars behind of abreak down during operation.是什么意思_The main deviceisplaced at theback of the automobile, whereas the sub device serves asa baton,whichyou canwind down the window anduse to warn cars behind of abreak down during operation.在线翻译_英语_读音_用法_例句