So why didn't they try to cultivate gutta percha?

那么他们为什么不尝试种植杜？

It also turned out that gutta percha was a great insulator for undersea cables.

事实证明，杜是海底电缆绝佳绝体。

Maybe you've never heard of the gutta percha, a tropical tree species that provided the sap used to make gutty balls.

也许你从未听说过 gutta percha ，这是一种热带树种，它可以用来制作 gutty 球。

The saltwater and acid-resistant properties that made gutta percha so important to undersea cabling also make it ideal in root canal surgery.

杜耐盐水和耐酸特性对海底电缆非常重要，也使其成为根管手术理想材料。