URT is a big project with high building and operating cost and long financial period.
城市轨道交通是一项建设和运营成本高、财务周期长的巨型工程。
Operating through the long period of time, some stores have been losing money.
操作系统通过很长一段时间，一些商店已经亏损。
Operating through the long period of time, some stores have been losing money.
操作系统通过很长一段时间，一些商店已经亏损。
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