defense

n.保护，保卫；防御工事；答辩

defaulter, defeat, defeatism, defeatist, defecate, defecation, defect, defection, defective, defectively, defectiveness, defector, defence, defence (US defense), defenceless, defencelessly, defencelessness, defend, defendant, defender, defensible, defensive, defensively, defensiveness, defer, deference, deferential, deferentially, deferment, deferral, deferrable, deferred shares, defiance, defiant, defiantly, deficiency, deficient, deficit, defied, defile, defilement,