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

由成橡制成的，一种塑料。

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

尽管今天有些口香糖仍在使用植物，但如今大多数都使用的成橡与糖和其他调味料混而成。

JSR started out by specialising in synthetic rubber.

JSR 最初专注于成橡。

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

们由专用成橡物与铝钢增强材料以及尼龙和芳纶织物组而成的。

He focused on the development of explosives technology as well as other chemical inventions, including such materials as synthetic rubber and leather, artificial silk, etc. By the time of his death in 1896 he had 355 patents.

他专注于炸药技术的发展以及其他学发明，包括成橡和皮革、人造丝等材料。到 1896 年去世时，他拥有 355 项专利。