urban ecological environments 城市生态环境
desert ecological environments 荒漠生态环境
ecological environments problems 生态环境问题
ecological environments construction 生态环境建设
ecological environments of wetlands 湿地生态环境
cultural and ecological environments 语言文化生态环境
The weak ecological environments are complex and multiplicity. And they are damageable.
脆弱生态环境地区复杂多样，易被破坏。
Schools, families and communities are three main ecological environments in mentally retarded children's life.
学校、家庭、社区是智力落后儿童生活的三个主要生态环境。
The ecological environments around mining zone are affected to great degree by the exploitation of mineral resources.
矿产资源开发给周围地区的生态环境带来巨大影响。
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