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。
The best way to defend is to attack.
防御的上策为攻击。
Identity authentication and access control are the major security mechanisms to defend active attack.
身份认证与访问控制是信息系统防御主动攻击的主要安全机制。
The best way to defend is to attack.
最好的防御就是进攻。
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。
We defend as a team and attack as a team.
我们的攻防都是以团队进行的。
The main thing is to always defend as a unit and then prepare the attack.
始终要有整体防守的概念，然后再准备进攻。
We must defend the system from attack.
我们必须捍卫系统免受攻击。
You have to love to attack and you have to love to defend.
你必须热爱助攻，也必须热爱防守。
We prefer to attack that is for sure, but we can defend when we have to.
我们当然更喜欢去进攻，但是我们在需要防守时，也可以做到。
For network security, it is important to defend from DOS attack.
如何防御DOS攻击是网络安全中一个重要的方向。
He prepared to attack us again, and we to defend ourselves.
海盗船准备对我们再次发动攻击，我们也全力备战。
'we had to keep our head down, defend well and attack well too - and that's what we did.'
我们不得不冷静下来，尽力的防守，并组织更好的进攻。庆幸的是我们做到了。
He knows how to defend, how to attack and can play either centre-half or left-back.
他知道如何防守，如何进攻，可以担任中后卫和左后卫。
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。
These Americans answer the call to defend freedom when it is under attack.
这些人在我们收到袭击是响应保卫自由的号召。
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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