Take ferns and bromeliads—the family that includes Spanish moss and pineapple plants.

以蕨类植物和凤梨科植物为例，凤梨科植物包括西班牙苔藓和菠萝。

This is a silica that the pineapple plant processes on its own, and it is of very high purity.

“这是菠萝自己加工而成的二氧化硅，纯度非常高。”