Traffic management policy is difficult to do exactly quantitative estimate, which is limited by many subjective and objective factors.
交通管理政策由于受到主、客观多方面因素的制约，很难对其进行精确的量化评价。
Traffic management policy is difficult to do exactly quantitative estimate, which is limited by many subjective and objective factors.
交通管理政策由于受到主、客观多方面因素的制约，很难对其进行精确的量化评价。
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