People used to build strong walls round their towns as a defence against enemies.
人们从前在城镇四周修筑城墙来抵御敌人.
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What's more, it was a stereoscopic defence against outside enemy.
这样一座城寨, 是当年辉发的立国之基,也是抵御外敌的坚实防线和最后一道立体防线.
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Armed with pikes for good defence against cavalry, but lacking in armour.
他们接受过部分训练,使用长枪,对抗骑兵颇为出色, 但是盔甲简陋.
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Levied troops equipped with pikes and protected by heavy armour. Good defence against cavalry.
重装长枪民兵装备长枪和重装盔甲, 擅长对抗骑兵.
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The country needs a defence capability as insurance against the unexpected.
国家需要有一定的防御能力，以应对不可预知的情况。
《柯林斯高阶英汉双解学习词典》
Install a burglar alarm if you can afford it as another line of defence against intruders.
如果你能负担的话,安装一个防盗报警器作为对入侵者的另一层防御.
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Lacking sovereignty, they could organise no defence against their oppressors.
没有主权他们就无法组织起来反抗压迫者。
《柯林斯高阶英汉双解学习词典》
Had not both countries signed a Nordic mutual-defence pact against financial destabilisation?
两国不是已经签订了北欧共同防御条约以抵抗金融动荡么?
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By wielding a knife in defence you run the risk of having it used against you.
若是挥刀自卫，有可能会被夺去而反受其害。
《柯林斯高阶英汉双解学习词典》
Oxygen therapy inoperation-an eas method defence against surgical-wound infection
术中氧疗&一种预防切口感染的便捷方法
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呵呵，直到有天有个叫洛哈特的饭桶当了黑魔法防御术老师，情况就不同啦。
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It is submitted that the right of self-defence can be available only against unlawful attack.
有人辩护道只有针对非法袭击时才能有自卫权.
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