基本国策 basic state/national policy e.g. The chinese government has taken environmental protection as basic state policy. 全球变暖 global warning 生态恶化 deterioration of the ecosystem 物种灭绝 extinction of bio-species 臭氧层破坏damage to the ozone layer 温室效应the green-house effect 酸雨acid rain 土地荒漠化 desertification
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