Take Vaseline and rub it on all the open cut surfaces.

把凡士林涂抹在所有切面上。

In Namibia, there both paintings and engravings, that's where the surfaces of the rocks is cut out.

在纳米比亚，岩石上雕刻出绘画和雕刻品。

Here are the small roots, and here are the cutting surfaces.

这是小根，这是切割面。

Wood anatomists have determined that certain surfaces of that wood must have been cut by metal blades—a Viking technology the local Indigenous people are not known to have shared.

木材结构学家判定那些木材的断面肯定是金属刀片切割的，而我们知道当地土著人没有这种维京人的技术。

In these animations, we have complex 3D geometry, and the objective is to change these geometries in a way that remains physically correct even in the presence of complex cut surfaces.

在这些动画中，我们有一些复杂的3D几何模型，而我们的目标是改变这些几何形状，使它们的形状在复杂的切割面下仍然保持物理上准确性。

" Chopped jelly used as a decoration must be very clear and be chopped cleanly with a wet knife on wet grease-proof paper so that the light is refracted from the cut surfaces, as from the facets of a jewel."

“用作装饰的碎果冻必须非常透明，用湿刀在湿的防油纸上干净地切开，这样光就能从切好的表面折射出来，就像从珠宝的切面折射出来一样。”