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。
Twitter, the popular microblogging site, was out of service much of the day Thursday as it worked to defend itself against a Web attack, but service appeared to have been restored by late evening.
这个广受欢迎的微博客网站，在星期四的大部分时间里停止服务，它其实是在抵御一场网络攻击，但当天晚间服务得到了恢复。
Lethal chemical Agent Countermeasures reviews some of the measures taken to defend against chemical attack.
致死性化学毒剂对策，综述了防御化学袭击的措施。
Improve ability to detect and defend against cyber attack.
加强监测和防御网络攻击的能力。
We should start with the premise that the United States, like all sovereign nations, has the unilateral right to defend itself against attack.
我们应该首先假定，美国，像其它主权国家一样，拥有单方面的权利来防卫自己免受袭击。
The need for stability and protection. From earliest times, communities have had to keep peace among their members, defend themselves against extra attack, and protect community assets.
稳定和保护的需要始自最久远的时期，人类团体不得不在其成员间保持和平，在外来进攻中进行自卫，并且保护团体的财产。
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。
Having intercepted their fuel shipments, Ren believed the planet ill-equipped to defend against his attack.
由于切断了塔穆兹—昂的燃料运输线，伦相信这颗星球将无力抵抗他的进攻。
While it is usually best to not try and defend your base against early harassment with the Attack Bike you have just made to harass your opponent, it can sometimes be a good choice.
用攻击摩托最好的方法就是不要在早期的骚扰战中执著于基地防守。你应该去骚扰对手，有时候会是一个很好的选择。
One problem that many players have faced in other games, is the ability to gather together to attack or defend against other players on a large scale.
许多玩家在游戏中要面对一个问题就是，召集起来大规模进攻或者防御。
Encryption and authentication mechanism has no use to defend against wormhole attack. It is need to embed corresponding mechanism in routing protocol to guarantee security.
虫洞攻击容易发动，很难被检测到，一般的加密认证方式不能防御虫洞攻击，需要在路由协议中有针对性添加特定的安全机制。
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。
Then, some countermeasures including the detection of TCP packets dropping rate are proposed to defend against this attack.
并对这种攻击提出了基于TCP连接包丢失率检测的防范措施。
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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