Pick Ecological system is one of the main area ecology structural and functional unit, belong to the highest level of ecology.
生态系统是生态学领域的一个主要结构和功能单位，属于生态学研究的最高层次。
Pick Ecological system is one of the main area ecology structural and functional unit, belong to the highest level of ecology.
生态系统是生态学领域的一个主要结构和功能单位，属于生态学研究的最高层次。
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