城市公共交通具有二重性，存在政策性亏损和经营性亏损。

The urban mass transit has the duality, the existence policy-type loss and the managerial loss.

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邮政部门既经营普遍服务性业务，又经营竞争性业务，而普遍服务业务给邮政部门带来巨额的政策性亏损。

Postal department manages universal service business, and also manages competitiveness business; As we know, universal service business brings a great policy loss to postal department.

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邮政部门既经营普遍服务性业务，又经营竞争性业务，而普遍服务业务给邮政部门带来巨额的政策性亏损。

Postal department manages universal service business, and also manages competitiveness business; As we know, universal service business brings a great policy loss to postal department.

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