The character of avifauna and the bird ecological group in this reserve were analysed.
还分析了该保护区鸟类组成区系和鸟类生态群的特征。
In 1975, a major advertising trade group held its first workshop on ecological marketing.
在1975年，一个主要的广告贸易集团在其内部首次举办了关于生态营销的研讨会。
This strategy of direct access to a maximum number of ecological zones by a single group is called vertical economy.
单一集团直接进入最大数量的生态区的战略称为垂直型经济。
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