a pugnacious fighter的用法和样例：
- A pugnacious, unyielding, or determined person.
- Afterwards I sought the advice of a pugnacious colleague.
- He will use his fire and fervour to motivate and cajole the troops into a pugnacious frenzy.
- The sword is an attribute of a fighter.
- He was a pugnacious, tough, liberal Methodist who believed Jesus was sent by his Father God to give us all second chances.