a hacking cough的用法和样例：
- He has had a hacking cough for weeks.
- Sensitive people may get watery eyes or a hacking cough.
- He gets a cold with a deep hacking cough.
- He has a feer， aching muscles and hacking cough.
- He has a fever, aching muscles and hacking cough.
- Disks are a hack, not a design feature.