国防的英文：
national defense

参考例句：

The US Senate Appropriations Committee,ie dealing with funds for defence,welfare,etc
美国参议院拨款委员会(负责国防,福利等的拨款).

unclassified defense documentation.
非保密的国防文件

The government has reduced its expense on defence.
政府减少了国防开支。

Did you try to say that money spent on defense is wasted?
你是想说国防开支是一种浪费吗?

New advances were made in modernizing national defense and the army.
国防和军队现代化建设迈出新步伐。

There was a general acceptance that the defence budget would shrink.
人们普遍相信国防预算将会缩减。

Modernization of industry,agriculture, national defence and sciencetechnology
工业、农业、国防和科学技术现代化

Scr mah the subject of defence and acronym, abbreviation, and buzzwords fly out
话题触及国防,缩合字,缩写字和行话就满天飞

You are the leaven which binds together the entire fabric of our national system of defence
你们是构成我国整个国防系统的最重要要素。

He is a hard-beaked hawk on defence.
在国防问题上他是一个铁杆鹰派人物。

national是什么意思：
adj. 国家的；全国的；国民的；民族的；国有的
n. 国民

Here is not merely a nation but a teeming nation of nations
这里不仅是一个国家，而是许多国家丰富的总和。

release of nationality
国籍解除; 放弃（脱离）国籍

a tributary nation
进贡国,2. 辅助的,3. 支流的,n.[C]1. 进贡国,附庸国[(+to)]2. 进贡者,3. 支流

The conception of the United Nations was in 1945.
联合国创始于一九四五年。

She is a nationally known writer.
她是全国知名作家。

defense是什么意思：
n. 防御，防御工事；防御物；防御措施；辩护；（比赛中的）守方
v. 抵御，防御

(in a match) the defense
守方

The defenses of the city must be strengthened.
这个城市的防御工事必须加强。

He was the then secretary of Defense.
他是当时的国防部长。

Offense is the best defense.
进攻是最好的防御。

Attack is the best form of defense
攻击是最好的防御