You could go for a hip, green backpack to get rid of eco-guilt, such as one made of recycled material, such as water bottles.

为免除破坏环境的罪恶感，你可以去买一款兼具时尚与环保的双肩包，比如用水瓶等可回收材料制成的包包。

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Substrate, which is the most important material in eco-engineering for rock slope protection(EERSP), is the substance basis for stable growth of vegetation.

基质混合物是岩石边坡植被护坡工程植被稳定生长的物质基础，在有限的物质条件下，其功能实现决定于功能材料的效应发挥。

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Show Toe Healthy Shoes, made of eco-friendly material strictly tested by China, have obtained the national patent.

秀尖顶健康鞋，选用国家严格检验的环保材料制造，并获得国家专利。

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The fact that wood is the most eco-friendly building material is an obvious reason for its use, but as Kantonen explains its aesthetic qualities are being rediscovered and appreciated again.

CNN: Spectacular forms in wood

Beyond this eco-friendly element, Radiator Labs is integrating a phase change material into its product that can store energy and heat an apartment for up to four hours without assistance from the boiler.

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