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.

他在吸端插入颗螺丝，然后利用段牙线， 在螺丝螺纹间碾压纸张，制造出连串微小且等距褶皱。

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，楞结构使纸板更加坚固耐用，适合运输各种易碎物品。

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噪音经过，那可能是钢轨波纹， 就是钢轨头部不平整。

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

楞纸可能是自切片面包问世以来最酷发明了。