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ekosustav u permafrostu Sustav interakcije bioloških zajednica i njihovog neživog okruženja u klimatskom području u kojem je podzemlje vječno smrznuto
environ.	冻土生态系统 (生物社区与它们周围的无生命环境互动的系统，底部土壤四季不断结冰的气候区域。)