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environ.
草原
草原大约覆盖了1,5的地球陆地表面。包括非洲的热带草原,北美大草原,俄罗斯和中亚草原。草原生态系统支援地表上下数以万计不同的生物,对维持地球的生态平衡至关重要。
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沼泽
长有低灌木和树木的低洼的定期洪泛区,含或不含泥炭的形成。
bur
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3 phrases
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Environment
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