a pool of cold light的用法和样例：
- The corpse lay face down in a pool of blood.
- The fox lay dying in a pool of gore.
- The body was lying in a pool of blood.
- Fatally shot, he lay in a pool of blood.
- I've tried tricks, like pretending I'm diving into a pool of cold water or visualizing my blood draining down to my toes, but neither has helped.