捍卫的英文：
defend
uphold
safeguard

参考例句：

The Press is a sentinel of(ie guards or protects)our liberty.
新闻界是捍卫我们自由的卫士.

You must learn to stand up for yourself.
你必须学会捍卫自己。

They will stick up for their beliefs.
他们将捍卫自己的信仰。

We must safeguard our state territorial integrity.
我们必须捍卫我们领土的完整。

He passionately championed the poor.
他满腔热情地捍卫穷人的利益。

Many heroic men and women have died in defense of liberty.
许多英勇的男男女女为捍卫自由而牺牲。

Thus, it will be able to make greater contributions to safeguarding the independence and sovereignty of the state
为捍卫我们国家的独立和主权

We shall defend our city, whatever the cost may be.
不管代价如何,我们要捍卫我们的城市。

He projected himself as the protector of national unity and harmony.
他把自己标榜成民族团结与和睦的捍卫者。

Britain's concern to protect national sovereignty is far from new.
英国对捍卫国家主权的关切早已不是什么新鲜事了。

defend是什么意思：
v. 保卫某人、某事物；为支持某人、某事而行动、说话或写文章；‘防守；参加卫冕的比赛

The judge find for the defendant
法官裁决对被告有利

The judge find for the defendant.
法官裁决对被告有利。

It is a scandal that the defendant was declared innocent.
宣判被告无罪，这真是可耻的事。

uphold是什么意思：
v. 鼓励；赞成，支持；维持；举起；支撑

advocate/uphold thriftiness
提倡节约

The appeal court uphold the sentence.
上诉法庭维持了判决。

Uphold a verdict,policy,principle
支持某项裁决、政策、原则.

safeguard是什么意思：
v. 保卫，保护
n. 保卫，保护（措施）

safeguard national independence and state sovereignty
维护民族独立和国家主权

It is obligatory for everyone to safeguard our motherland.
保卫祖国人人有责。

What is the solution to safeguarding competition on the Internet?
有什么方案可以保证因特网上的公平竞争