translation.en: The silk worm does a remarkable thing: it uses these two ingredients, protein and water, that are in its gland, to make a material that is exceptionally tough for protection -- so comparable to technical fibers like Kevlar.
translation.zh: 桑蚕所做的了不起的事是： 蚕丝中有两种成分，蛋白质和水 原保存于在桑蚕的腺体中 以此来制造这种异常坚固的保护性材料 -- 可以比得上人造纤维 比如芳纶