However, most gum today is made from natural or synthetic polymers, most commonly butyl rubber.

但是，如今的大多数口香糖由天然或人造的聚合物制成，其中最常见的是丁基橡胶。

Not to mention synthetic moldable polymers.

更不用说合成的可模塑聚合物了。

We've also been able to program cells to make completely synthetic polymers containing the chemical linkages found in several classes of biodegradable plastics.

我们还能够对细胞进行编程，以制造完全合成的聚合物，其中包含在几类可生物降解塑料中发现的化学连接。