The present so called sustainable usage of resources is only a relative one and its specific denotation is elucidated.
认为现阶段所谓资源持续利用，只是相对的资源持续利用，并说明了具体含义。
Is the memory usage sustainable over a long period?
内存使用情况是否能长期维持？
The movement aims to raise awareness of environmental problem caused by the heavy usage of cars in urban areas, and to promote bicycles as a cleaner and more sustainable mode of transport.
他旨在呼吁人们意识到城市的区大量用车所导致的环境问题，提倡更为洁净、更为持续的自行车出行方式。
Then it introduces the usage situation and problems of wetlands in China. At last, the author put forward some sustainable development countermeasures of protection and use.
湿地的利用状况，以及在利用中存在的主要问题与湿地危机，最后提出了应当大力加强湿地保护的一系列切实可行的重要措施。
Then it introduces the usage situation and problems of wetlands in China. At last, the author put forward some sustainable development countermeasures of protection and use.
湿地的利用状况，以及在利用中存在的主要问题与湿地危机，最后提出了应当大力加强湿地保护的一系列切实可行的重要措施。
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