As arrighi admits , china is far from " an ecologically sustainable development path " .
阿瑞吉承认，中国距离“生态可持续发展道路”还很远。
First of all , this gas is ecologically safe .
首先，这种气体在生态上是安全的。
He spoke in generalities about " sustainable development " and making the city more ecologically friendly .
并笼统地谈到了“可持续发展”以及使城市更加节能环保的问题。
For organisations such as the nature conservancy , which protects ecologically sensitive spots by buying them or persuading others to set them aside , businesses are a big source of income .
