If there's wood, we will use wood but the very special African woods with a very fine structure.

如果有木材，我们会使用木材，但会用非常特殊的非洲木材，结构非常细。

The sponges don't need high temperatures to generate these fine structures.

海绵不需要高温来产生细结构。

It is a man-made composite material that changes the conventional properties of light and electromagnetic waves by designing and reorganizing the fine structure of the material.

是一种人造复合材料，通和重组材料的细结构，改变光和电磁波的传统特性。

A big car will not feel the fine structure of the road, it will just roll along and will be, you know, just as fast as normal.

一辆大型车不会感觉到路面上的细微结构，只会以正常速度碾压而。

But not just any old pure carbon, pure carbon with a very fine microscopic lattice-like structure that actually turns out to be absolutely essential to the functioning of gunpowder.

但不仅仅是任何旧的纯碳，具有非常细的微观晶格状结构的纯碳实际上对火药的功能是绝对必要的。