() visiting all the homes or offices in an area, especially to try to sell sth（尤指设法推销某物）挨家挨户，上门◆They sell household goods door to door and through catalogues.他们通过上门推销和寄送商品目录来销售家庭用品。 if sth is delivered door to door, it is brought directly from the factory or supplier to the customer送货上门；按户送达◆We deliver door to door anywhere in the US.我们送货上门到美国的任何地点。▸ˌdoor-to-ˈdoor