Now, what do you know about vulcanized rubber?

你知道硫化橡胶吗？

The real " fathers" of the automobile are Gottlieb Daimler, the German who made the first successful gasoline engine, and Charles Goodyear, the American who discovered the secret of vulcanized rubber.

真正的汽车“之父”是制造出第一台成功的汽油发动机的德国人戈特利布·戴姆勒和发现硫化橡胶秘密的美国人查尔斯·固特异。

The chemical bonds that hold together plastics or vulcanized rubber are immune to most of the digestive enzymes used by bacteria to break down natural polymers and unlike metals, plastics don’t rust or corrode.

将塑料或硫化橡胶结合在一起的化学键不受细菌用来分解天然聚合物的大多数消化酶的影响，而且与金属不同，塑料不会生锈或腐蚀。