defense

national defense,国防

air defense,n. 防空

defense system,防御体系

defense against,防御；保卫

defense secretary,国防部长

department of defense,国防部

defense minister,国防部长

defense department,国防部

defense mechanism,[心理]防卫机制；防御机理

in defense of,为…辩护；为保证…

defense budget,国防预算

civil defense,民防，民防组织

oral defense,论文答辩；口头答辩

(thesis) oral defense,论文答辩

offense and defense,攻与守

zone defense,区域防守

thesis defense,论文答辩