Corrugation might be the coolest thing since before and after sliced bread.

瓦楞纸可能是自切片面包问世以来最酷的。

If we hear percussive noising going through, maybe it's corrugation, which is just bumpiness in the head of the rail.

如果我们听到有节奏的噪音经过，那可能是钢轨波纹磨损， 也就是钢轨头部的平整。

As I mentioned before, the corrugation made the cardboard more strong and more durable for transporting all sorts of fragile things.

如前所述，瓦楞结构使纸板更加坚固耐用，适合运输各种易碎物品。

He inserts a screw into one end and, using a piece of dental floss, crushes the paper between the threads of the screw, creating a series of tiny, equidistant corrugations.

管的一端插入一颗螺丝，然后利用一段牙线， 螺丝的螺纹间碾压纸张，制造出一连串微小且等距的褶皱。