a saw-toothed wheel的用法和样例：
- A saw - toothed mountainrange; a sawtooth curve.
- This toothed wheel should be meshed with that one.
- A groove or notch made by a cutting tool, such as a saw or an ax.
- They are filing the teeth of a saw.
- Near the seesaw I saw a saw saw the wood into four.
- A saw used with one hand for cutting wood.