求翻译：市政道路施工（不含涵洞、桥梁），建材销售。房屋建筑工程施工总承包壹级；建筑装修装饰工程专业承包叁级（凭有效许可证在核定的期限内经营）是什么意思？

Municipal road construction (excluding culverts, bridges), building materials sales. Housing construction general contractor Class; building decoration engineering professional contract Sanji (with a valid license to operate within the approved period)

municipal road construction (not including culverts, bridges, and building materials. Housing construction general contractor and construction, building renovation and decoration professional contractor c-Class (with valid license within the approved period)

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Construction of municipal roads (not including culverts, bridges), building material sales. Housing construction general contractor grade construction decoration engineering professional contract level III (with valid licenses operate within the approved time frame)

The municipal administration roadbuilding (does not contain culvert, bridge), building materials sale.House architectural engineering construction primary contractor one level; The construction repair decoration project specialized contracts three levels (to manage depending on effective permit in c