At this point, they had two failures, both well below the specified breaking strength of the cables.

此时，他们发生了两次故障，均远低于电缆的规定断裂强度。

And then you take that bundle of fibers and you twist it a little bit, because by twisting it, you increase its breaking strength even more.

之后，再拿揉搓好的那根纤维捻一下，这样能让其抗断强度得到更大的提升。