racetracks的翻译，读音

词态

例句

China's national TV, the CCTV, earlier reported that some of the substandard racetracks were made of industrial wastes such as scrap tires and wires and cables. 中国中央电视台早前报道过一些劣质跑道是由工业废弃物制成的，比如废轮胎，废电线以及废电缆。