对于中国邮递员问题，可以利用奇度数结点的配对来进行求解。
The pairing of odd degree's vertices can be applied to solving the Chinese Postman Problem.
如果邮政编码有问题，邮递员也可以根据街道名称、门牌号码投递邮件。
If that fails the postman always has the number and street to fall back on.
如果邮政编码有问题，邮递员也可以根据街道名称、门牌号码投递邮件。
If that fails the postman always has the number and street to fall back on.
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