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极地环境保护
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极地环境保护
为保护南北极环境和生态系统、合理利用南北极自然资源、防止极地环境的污染和破坏、维护南北极海洋生态系统安全而采取的各项行政、法律、经济、科学技术等措施。
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horse racing
horse racing turf
horse-radish
horseradish peroxidase
Horse Riding Machine
horse riding movements in Yuan Zaju opera
horseshoe
horseshoe bats
horseshoe diffeomorphism
horseshoe kidney
horseshoe kiln
horseshoe lemma
Horseshoe map
horseshoe mapping
horseshoe mounting
Horseshoe Nebula
horseshoe orbit
horseshoe-shaped curve
Horseshoe-Shaped Gold
horseshoe worm
horse skin
horsetail embroidery of Sui nationality
horsetail family
horsetail fern
horsetail tree
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更新时间:2026/6/13 18:11:31