make operation simply
简化操作
以上为机器翻译结果，长、整句建议使用 人工翻译 。
It points out that, due to the restrictions of policy and its characteristics, it will be very hard for a metro company to make profit simply from metro operation.
地铁公司由于受政策和自身特点等方面的限制，单靠自身的经营很难实现盈利。
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