It's made of synthetic rubber, which is a type of plastic.

它是由合成橡胶制成的，它是一种塑料。

Although some gums today still use plants, most recipes today now use synthetic rubber mixed with sugar and other flavorings.

尽管天有糖仍在使植物，但如数都使的是合成橡胶与糖和其他调味料混合而成。

JSR started out by specialising in synthetic rubber.

JSR 最初专注于合成橡胶。

They're made with a combination of proprietary synthetic rubber compounds, which are paired with aluminum steel reinforcements and nylon and aramid fabrics.

它们是由专合成橡胶化合物与铝钢增强材料以及尼龙和芳纶织物组合而成的。