This biomass material is in a continuing state of decomposition, ultimately becoming that semi-stable material called humus.

这个生物质是在一个连续的分解状态下，最后生成了一种半稳定的物质叫做腐殖质。

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This is due to stable nature of the business, as raw material costs have been relatively stable thanks to long-term purchasing agreements with farmers and growers worldwide.

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Developing a substance that would work reliably in potentially extreme conditions and remain stable over the life of the material was also a challenge.

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The result, says Mr Clegg, is a material that has the look and feel of hardwood, but that is stronger, more stable, durable and longer-lasting.

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