城市公共交通具有二重性并存在经营亏损是国内外普遍存在的事实。
The Widely existing fact for both home and abroad is that the urban public transport system has duality and is undergoing management loss.
城市公共交通具有二重性，存在政策性亏损和经营性亏损。
The urban mass transit has the duality, the existence policy-type loss and the managerial loss.
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