求翻译：专门贸易是“总贸易”的对称，是指以关境为标准划分的进出口贸易。只有从外国进入关境的商品以及从保税仓库存提出进入关境的商品才列为专门进口。当外国商品进入国境后，暂时存放在保税仓库，未进入关境，不列为专门进口。从国内运出关境的本国产品以及进口后经加工又运出关境的商口，则列为专门出口。专门进口额加专门出口额称为专门贸易额。德国、意大利等国采用这种划分标准。是什么意思？

Specialized trade is "total trade" symmetry, refers to the customs territory of the standard classification of import and export trade. Only foreign goods into the customs territory, and made from a bonded warehouse storage of goods into the customs territory only as a special import. When foreign g

specialized trade is a "general trade" refers to the symmetry that customs border demarcation criteria for the import export trade. It is only from foreign access to border and customs bonded warehouse inventory of merchandise as well as from the border and customs entry classified as specially impo

Specialized trade is a "general trade" symmetry refers to close the boundary as the standard classification of import and export trade. Only from foreign merchandise entering close the boundary from the bonded warehouse storage and not classified as dedicated import of goods made t