at the heels of的用法和样例：
- Famine is often at the heels of war.
- Bad luck dogged him at the heels.
- Oo-ee! Just look at the heels on her shoes.
- The bowsprit was undamaged, but loose at the heel.
- A crowd gathered at the scene of the fire.
- A man appeared at the castle gate in the guise of a woodcutter.