It is impossible to defend against an all-out attack.
防御全面进攻是不可能的。
A family must defend its home against attack.
一个家庭必须保护其不受袭击。
Their duty is to defend their country against both domestic and foreign enemies' attack.
他们的职责是保卫国家不受国内外敌人的侵害。
Our duty is to defend our country against the attack of the enemies.
我们的职责就是保卫我们的祖国免受敌人的攻击。
There are ways to attack the system which we need to defend against, " he said."
我们需要防范那些攻击这个系统的方法。
IP traceback is an important way to defend against distributed denial of service attack.
IP追踪是防御分布式拒绝服务攻击的重要方法。
IP traceback is an important way to defend against distributed denial of service attack.
IP追踪是防御分布式拒绝服务攻击的重要方法。
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