Appearance: diffuse-porous wood, half ring hole material tendency obvious, growth ring slightly obviously, heartwood red brown to purple brown, sawdust water extract of red;

外观：散孔材，半环孔材倾向明显，生长年轮略明显，心材红褐至紫红褐色，木屑水浸出液红色；

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But polystyrene, the lightest and safest packaging material for any wine in the hold, is horribly difficult to recycle, and has a tendency to shed clingy white particles.

但聚苯乙烯，作为可装任何酒的最轻、最安全的包装材料，却很难回收，并且往往会分解出一些粘状的白色小颗粒。

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The developing tendency of advanced bulletproof composite material is prospected.

认为先进防弹复合材料是当今防弹材料的发展趋势。

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"I use fabrics from the show, " he says, referring to his tendency to drape himself in scraps of material.

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As the late, great economist Julian Simon demonstrated (both with clear economic logic and an unassailable mountain of data), there is a long-run tendency for standards of living to improve and for material scarcity to relax as a constraint rather than tighten.

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