defect

n.缺点，缺陷 vi.变节，投敌，脱党

deep-rooted, deep-seated, deep-sea, deep-water, deepen, deeply, deepness, deer, deerskin, deerstalker, deface, defacement, defamation, defamatory, defame, default, defaulter, defeat, defeatism, defeatist, defecate, defecation, defection, defective, defectively, defectiveness, defector, defence, defence (US defense), defenceless, defencelessly, defencelessness, defend, defendant, defender, defense, defensible, defensive, defensively, defensiveness, defer, deference,