n.<生>生态系统( ecosystem的名词复数 );
例句:
1、
The ecological integrity of river ecosystems depends on their natural dynamic character.
完善的流域生态系统的维持依赖于其自然动态特征的保持.
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2、
Ecological degradation mainly includes degradation of terrestrial and aquatic ecosystems.
生态退化主要包括陆地生态系统和水域生态系统的退化.
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3、
Because at random was exactly how humans were trying to restore ecosystems.
要知道,人类还原生态系统的方式恰恰是很随意的.
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