colloidal substance

例句：

1. 1. Colloidal particles have a significant impact on the stability of liquids.
   胶体颗粒对液体的稳定性有显著影响。
2. 2. The colloidal nature of the material makes it difficult to process.
   这种材料的胶体性质使得加工变得困难。
3. 3.Colloids play an important role in biological processes and are often used as food additives.
   胶体在生物过程中起着重要作用，常被用作食品添加剂。