纤维 (xiān wéi): fiber

The doctor suggested he eat more vegetables and whole grains because these foods are rich in dietary fiber and help with digestion.

This piece of clothing is made from natural fibers. It's very breathable and comfortable to wear in summer.

The police carefully examined the crime scene and finally found a tiny fiber, which might have come from the suspect's clothing.

This new material is made by combining carbon fiber and resin. It is strong and lightweight, and is widely used in the aerospace field.

Bananas, oats, and beans are all rich in fiber. Eating them regularly can promote intestinal health.