At issue is the difficulty of allocating the cost of collective action and trusting other parties to bear their share of the burden.

目前主要解决两大困难，一是如何分配共同行动中各国的责任，二是如何使一国信任其他各国履行其应履行的职责。

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"Well,"said his friend,"the bear said:’Don’t trust those who leave their friends the moment they get into difficulty!’"

“噢”，他的朋友答道：“熊说，不要信任那些一遇困难就背弃朋友的人。”

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Nowadays, hunting a job has become a great difficulty for graduate. So there is a growing number of people do not want to create a new life to repeat their old roads and bear the hardship.

如今寻找工作对于毕业生来说已经成为了很大的难题，所以越来越多的人不想再创造一个新的生命去走他们的老路，承受那些痛苦。

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