a bag made of straw的用法和样例：
- A bag made of sturdy material and furnished with shoulder straps, designed for carrying articles such as camping supplies on the back.
- Most modern Scottish bagpipes are made up of three wooden pipes, which come out of the top of a bag made of sheep or elk skin.
- "The Paris brat ain't made of straw," added Brujon.
- What is this bag made of? It's made of leather.
- a bag made of paper or plastic for holding customer's purchases.