This is very hard for individual countries to go against those rules.
个别国家违背这些规则是很难的。
How these should be interpreted and enforced is a matter for individual countries.
至于这种差别该如何解读以及实施,那就是各个国家的事情了。
But what makes sense for individual countries may not make sense for the rich world as a whole.
但是对个别国家有意义可能并不意味着对发达国家作为一个整体也有意义。
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