Third part concerns the attitude and practice of some countries to precautionary principle.
第三部分，部分国家对预警原则的态度和实践。
Second part concerns the presentation of precautionary principle in international law.
第二部分，预警原则在国际法中的体现。
Second part concerns the presentation of precautionary principle in international law.
第二部分，预警原则在国际法中的体现。
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