[fáng yù]
defense
active defense
積極防御
passive defense
消極防御
guard against external aggression
防御外來侵略
work together for the common defence
共同防御
go over from the defensive to the offensive
由防御轉入進攻
defence in depth
縱深防御
strengthen defence capabilities
加強防御力量
guard against subversion and aggression by external enemies
防御國家外部敵人的顛覆和侵略
force the enemy onto the defensive
迫使敵人轉入防御地位
The best defense is to attack.
進攻是最好的防御。