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1·These front-line defences are backed up by armoured units in reserve.

前线防御有后备装甲部队的支援。《柯林斯英汉双解大词典》

2·The democracies of the West may find it hard to shore up their defences.

西方的民主国家可能发现很难加固自己的防御。《柯林斯英汉双解大词典》

3·The harbour's sea defences are in poor condition.

港口的海防工事状况很差。《牛津词典》

4·He emphasized the need to maintain Britain's defences at a level sufficient to deal with the unexpected.

他强调需要将英国的防卫力量维持在足以应付突发事件的水平。《柯林斯英汉双解大词典》

5·They appeared in court not to raise defences, but to challenge the court jurisdiction.

他们来法院不是应诉，而是抗辩。《新英汉大辞典》

6·Our defences were not easily breached.

我们的防御工事不易被突破。

7·Mrs Merkel has shored up her defences.

默克尔已经强化了她的防御措施。

8·Some foods positively bolster your defences.

某些食物确实能增强你的防御。

9·Some of these defences are simple barriers.

不过其中的一些防御只是一些简单的屏障。

10·The enemies' defences were softened up after bombing.

轰炸后的敌人防御被削弱了。

(1)national defence国防

(1)air defence防空；空防

(1)defence against防御；保卫

(1)in defence of保护，防护；为……辩护

(1)defence construction国防工程

(1)civil defence民防