a naked flame的用法和样例：
- If the truck is electricity driven never inspect the battery near a naked flame or while smoking.
- Germs are too small to be seen with a naked eye.
- The man had a naked lady tattooed on his back.
- The red sunset was sinking in a naked halo.
- This same truth is a naked and open day light.
- A naked body was discovered in the woods.