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。
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。
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