Tuesday, February 20, 2018

为减少空气污染，德国考虑试行免费公共交通

tech.sina: "德国近日宣布，最迟于今年年底前，将在波恩、埃森、曼海姆、黑伦贝格、罗伊特林根这五座城市试行免费公共交通。"
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