long-term ecological study
long-term ecological study
长期生态研究
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The basic ecological data of the leopard, such as the distribution, population and it's dynamic, behavior, prey, is least known for lacking of a long-term study.
由于长期缺乏有效的科学调查，目前对其分布、种群及动态、行为、猎物现状等基础信息不清。
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