Celluloid gets its ignitable properties from a substance called nitrocellulose, which was used as a replacement for gunpowder in weapons during the 1800s.

赛璐珞从一种叫做硝化纤维素的物质中燃特性，硝化纤维素在 19 世纪被用作武器中火药的代品。

He used nitrocellulose, a flammable solid, created by mixing cotton with nitric acid to create a hard, shiny, white sphere.

他使用了硝化纤维素， 一种易燃固体，棉花与硝酸混合制成坚硬、闪亮的白色球体。

By the middle of the century, American entrepreneurs discovered that dipping nitrocellulose in wax turned it into a hard, enduring substance, and patented it as celluloid.

到本世纪中叶，美国企业家发现硝化纤维素浸入蜡中会使其成为一种坚硬耐用的物质，并其申请了赛璐珞专利。