cure a cough的用法和样例：
- What is the best cure for a cough?
- My fever is gone, but I still have a cough.
- Any illness of the lungs or throat, such as asthma or a cough.
- He snuffs up salt and water to cure a cold.
- A cough syrup that goes down readily.
- There's no miracle drug to cure a common cold.