We take out the copper foil, aluminum foil, some plastics.

我们取出铜箔、铝箔、一些塑料。

In order that the foil does not fall apart, each transparent ring is actually a series of curved slots in the copper rather than a continuous gap.

让铜箔散开，每一个透明的环实际上都是铜箔里的一系列的曲线轮槽，而是连续的空隙。