Moreover, the new concepts of ecological optimization criterion and finite time availability are presented.

同时，还介绍了生态学优化准则及有限时间可用性等新概念。

youdao

Through case study, find the bronze drum can use in the locality for a long time, there is connection that can't be isolated with the local unique ecological environment and culture factor.

通过个案研究，发现铜鼓在当地之所以能够长期使用，与当地独特的生态环境和文化因素有着紧密的联系。

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Moreover all index systems and methods for urban ecological environment are studied. At the same time, the existing problems are indicated and the Suggestions are put forward.

对目前国内外城市生态环境评价指标体系和方法进行了分析和研究，提出了其中存在的问题和建议。

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The world will regret having spent so much time debating global warming while the real ecological threat, access to cheap safe water, becomes obvious.

FORBES: Twenty Trends For The 2010s

Perhaps now is the time for me to consider a more formal return to ecological study?

BBC: By Hugh Warwick

To be sure you are marking a fundamental change in human society borders on the impossible--such events happen just a few times a century, and (barring things like ecological collapse) rarely with anyone's ability to see at the time that anything has changed.

FORBES