敵の襲撃に備えて城の防御を固めた。
They strengthened the castle's defenses in preparation for an enemy attack.
兵士たちは少人数で砦を防御した。
The soldiers defended the fort with only a small force.
攻撃は最大の防御だと言われる。
They say that offense is the best defense.
彼は相手のパンチを両腕で防御した。
He guarded against his opponent's punches with both arms.