The Darwin’s bark spider's silk "is about the strength of steel but much, much tougher, because it also stretches.
达尔文吠蛛的蛛丝和钢筋的强度差不多，但却比钢筋个结实，因为它具备很强大的延展性。
The Darwin’s bark spider's silk "is about the strength of steel but much, much tougher, because it also stretches.
达尔文吠蛛的蛛丝和钢筋的强度差不多，但却比钢筋个结实，因为它具备很强大的延展性。
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