Such weakening may have been caused by any or all of the following: Constant stretching under heavy loads; Stowing away wet; Subjection to extremes of heat and damp.
Uphelelo olunje lwamandla lungadalwa nayiphi okanye zonke ezi zilandeleyo: Udityaniso ololuleka ngaphantsi komthwalo onobunzima, ukulahlelwa ngaphandle kobumanzi, isifundo esikude kunesiphelo sobushushu okanye ukufuma.