worldwide ecological changes 全球的生态变化
The earthquake has caused an ecological disaster. 这次地震已经造成了生态灾难。
It is known as one of the country's leading ecological groups. 这个团体被认为是该国主要的环保团体之一。
an ecologically sound product 无公害产品
ecologically sensitive areas 生态上脆弱的地区
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