Existing theme: environmental theme of "I'm a little forest protection personnel", "environmental protection small guards", the "little volunteers moral theme", etc.

现有主题有：环保主题的《我是小小护林员》、《环保小卫士》，德育主题的《小义工》等。

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The market has recently grown and a much wider range is now available – everything from recycled board games to science kits with an environmental theme can be found online.

玩具市场最近得到扩张，为人们提供了更广泛的选择——从以再生材料制作的棋盘游戏到以环境为主题的科学教材，每一样都能在网上找到。

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Wang Tao hopes to set up a "metal art" theme park to show people the importance of environmental protection.

王涛希望建立一个“金属艺术”主题公园，向人们展示环境保护的重要性。

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The company says it was "green" before environmental sensitivity was a popular corporate theme.

WSJ: Air War: 'Winglet' vs. 'Sharklet'

David Roberts, a regular contributor to Grist, a prominent environmental news and commentary blog site, carried the denier Holocaust theme even farther.

FORBES: Hellfire and Heresy: Global Warming Hotheads Inflamed About Skeptical Challengers

That name, and the theme of aboriginal wisdom about nature, thus entered the history of environmental activism.

ECONOMIST: Bob Hunter, inspirer of Greenpeace, died on May 2nd, aged 63