But that has been hard to prove. Studies of dietary fiber and colon cancer failed to find that fiber was protective, and studies of vitamins thought to protect against cancer failed to show an effect.

关于膳食纤维与结肠癌关系的研究未能证明纤维素能起到保护作用，对于维生素能防止癌症的研究也以未能有明显的作用效果。

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Mature nuts ovoid or ellipsoid, shell thickness, fiber, endocarp hard.

成熟的坚果卵形或椭球形，外壳厚，纤维质，内果皮硬。

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The suspended ceiling is made from compressed bamboo fiber, and all hard surfaces are made from polished lava terrazzo. All wooden floors are made from reclaimed teak wood.

悬垂的天花板由压缩竹纤维制造，所有硬表面由抛光熔岩水磨石做成。所有木地板由可回收柚木制成。

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It is also a vital component of high-voltage wires, magnetic coatings for high-density hard disk drives, fiber optics, fiberglass, catalytic converters and spark plugs.

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The Zonda looks like what it is, a domesticated Le Mans prototype, a hard-eyed courtesan in a carbon-fiber corset laced with an assassin's piano wire.

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The 787, the first jetliner made from a majority of lightweight carbon fiber composites, eliminates hot, heavy and hard-to-maintain pneumatic systems that power key parts of the jet.

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