1、 defence
2、 Offence is the best defence、进攻是最好的防御。
3、 The country put up a strong defence against the enemy's invasion、为了抵制敌人的侵略，这个国家布置了坚固的防御工事。
4、 The government has reduced its expense on defence、政府减少了国防开支。
5、 His defence was weak、他的答辩软弱无力。
6、 When the war ended all defences stopped， too、战争结束时防御工事也停止了。