protect/defend/guard/shield.导航词义：保护，保卫

1. protect:v. 保护，护卫.普通用词，指采取手段使某人不生病或某物不受损害等。

Physical exercise can protect you against the flu.

体育锻炼可以预防流感。

What shall I do to protect my car against rust?

怎样才能防止汽车生锈？

She closed the window to protect the books from the rain.

她关上窗户防止雨水把书淋湿。

2. defend:v. 保护，保卫.通常指用武装力量保护，使某人、某物、某处免受袭击。

The Great Wall was once used to defend against military aggression.

长城曾用来防御军事侵略。

He was sent to defend the border three years ago.

3年前他被派去守卫边疆。

3. guard:v. 保卫，守卫.指警惕地守护以防止造成伤害、损失等。

The command told those two soldiers to guard the entrance.

指挥官叫那两名士兵守着入口。

A lioness guarded her cubs.

一头母狮守护着幼狮。

4. shield:v. 保护，保卫.通常指保护人、企业等免受伤害或损失。

import tariffs that shield enterprises from foreign competition

保护企业免受外国竞争威胁的进口关税

His wife lied to shield him when she took the stand.

他的妻子在出庭作证的时候为保护他而撒了谎。

She drew the curtains, shielding her eyes from the sun.

她拉上窗帘，使眼睛免受阳光照射。

全部

1·The gunman used the hostages as a human shield.

持枪歹徒用人质作人体盾牌。《牛津词典》

2·He clanged his sword three times on his shield.

他用他的剑当当当地敲了3下盾。《柯林斯英汉双解大词典》

3·The police officer fended off the blows with his riot shield.

警察用防暴盾牌抵挡攻击。《牛津词典》

4·The team is his shield, his radar.

这个团队是他的盾牌，他的雷达。

5·Are the Martian shield volcanoes still active?

火星上的盾状火山还处于活跃期吗？

6·Did you say we have shield volcanoes on Earth?

你是说地球上有盾状火山吗？

7·Shield volcanoes have very gentle sloping sides.

盾状火山的斜坡非常平缓。

8·What happens if your spear hits against your shield?

如果用你的矛刺你的盾，结果会怎么样呢？

9·We wait in hope for the Lord; he is our help and our shield.

我们的心等候耶和华；他是我们的帮助和盾牌。

10·My shield is the strongest. It can stop any spear in the world.

我的盾是最结实的。它能抵挡住世界上任何矛。

盾

1·He clanged his sword three times on his shield.

他用他的剑当当当地敲了3下盾。《柯林斯英汉双解大词典》

2·Did you say we have shield volcanoes on Earth?

你是说地球上有盾状火山吗？

3·Are the Martian shield volcanoes still active?

火星上的盾状火山还处于活跃期吗？

4·What happens if your spear hits against your shield?

如果用你的矛刺你的盾，结果会怎么样呢？

5·My shield is the strongest. It can stop any spear in the world.

我的盾是最结实的。它能抵挡住世界上任何矛。

盾牌

1·The gunman used the hostages as a human shield.

持枪歹徒用人质作人体盾牌。《牛津词典》

2·The police officer fended off the blows with his riot shield.

警察用防暴盾牌抵挡攻击。《牛津词典》

3·The team is his shield, his radar.

这个团队是他的盾牌，他的雷达。

4·The shield is adorned with argent lambrequins.

盾牌上装饰着银色的垂纬。

5·He is my shield and the horn of my salvation, my stronghold.

他是我的盾牌，是拯救我的角，是我的高台。

屏蔽

1·The older warheads, the most elderly of which will reach the end of their 30-year design lifespan in 2008, could then be retired without compromising the country's nuclear shield.

年久的弹头到了2008年将达到设计的30年使用期，这些旧弹头也就在没有危害国家的核屏蔽的情况下被淘汰。

2·It's here that you can begin to see why this discussion is important — it reveals that one of data binding's advantages is its ability to shield the programmer from more complex APIs.

就此您可能已经看出这些讨论的重要性，它表明，数据绑定的一个优点是能够向程序员屏蔽更加复杂的API。

3·But a small part, protected by a heat shield made of carbon-phenolic resin, survived and landed in the desert near Woomera.

但是有一小部分因由碳酚醛树脂做成的热屏蔽的保护而幸存下来，并在南澳大利亚中部伍默拉城附近的沙漠地区着陆。

4·That said, I think the jBPM diagrams that are used to construct models through the Eclipse plugin are purposely designed to shield the modeler from the underlying implementation.

也就是说，通过使用Eclise插件构建模型的jBPM图的设计目的就是向建模人员屏蔽底层实现。

5·As with any round wire, conventional braided shielding or served shield can be incorporated into this flat configuration.

就像任何圆电线一样，传统的编织屏蔽或作用屏蔽可以组成这种扁平配置。

罩

1·Remove exhaust heat shield from down pipe.

从下行管拆卸排气隔热罩。

2·In large-scale combat, giant Gungan shield generators can create an immense umbrella of protective shield energy that can stop laser bolts and physical objects with great kinetic energy.

遇上大规模地面战，巨大的冈根护罩发射器会生成一个庞大的能量防护伞，用来抵御激光束和各种高动能武器的攻击。

3·The causes of the front fog lamp shield blistering after surface treatment are studied by means of metalloscopy scanning electronic microscope and energy spectrum analysis.

运用金相显微镜、描电镜和能谱仪，研究了前雾灯遮光罩表面处理后起泡的原因。

4·You tie a helium balloon to your head and hope it ACTS like a mana shield.

你将一个氦气球系在头上，指望它能起魔法护罩的作用。

5·It is comprised of multiple stage centrifugal pump, double stage gas separator, protector, submersible motor, guard shield and setting gas separator.

它主要由多级离心泵、双级分离器、保护器、潜油电机、护罩、沉降分离器组成。

掩护

1·The article discusses problems of safety coefficient caused by open welding of shield beam.

对掩护梁发生开焊而引发的安全系数问题进行了探讨。

2·By analysing the shield support accident happened in coal face, discusses its reasons and divides the regions possible happened accident, points out the countermeasures.

通过对掩护支架采煤工作面发生事故的分析，论述了事故发生的原因，及可能发生事故区域的划分，并提出了防范措施。

3·Obvious benefits were introduced to replace the means of chamfering demolition mining by shield support mining.

介绍用掩护支架采煤代替斜切爆破采煤法的显著效益。

4·From his Humvee, Sergeant Rieman returned fire - and used his body a shield to protect his gunner.

里曼中士从悍马吉普车上进行了还击——用自己的身体掩护了炮手。

5·Repetition goes on until the best structure of the flexible shield support is achieved.

如此反复，直至获得柔性掩护支架的最佳结构。

挡箭牌

1·Another factor contributing to the tendency to deny the assumption of a fixed human nature was that the concept has so often been abused as a shield behind which the most inhuman acts are committed.

另一个促使人们倾向于否定本性难移假设的因素是，这一概念经常被滥用，被当作大多数不人道行为的挡箭牌。

2·They have used their people as a shield.

他们把自己的人民当作挡箭牌。

3·That raises suspicions that she is being used as a shield against American drone attacks on the Shabab, which have increased.

人们怀疑索马里海盗将这个法国女俘虏作为抵制美国对不断增大的青年党发动攻击的挡箭牌。

4·Classroom immediately quiet down and come up with the heroic men were busy shield - book.

教室立刻安静下来，英雄好汉们忙拿出“挡箭牌”——书。

5·You really think, you really think it's appropriate that you should actually take children and use them as a shield?

你真的认为，你真的认为，拿小孩当挡箭牌，合适吗？

防护罩

1·What's more, the Stampede comes with a barrel-mounted shield so you don't catch a suction cup in the mouth while mocking your poorly armed opponent.

更佳的是，Stampede配有架好的炮管防护罩，因此在你嘲笑装备很逊的对手时不用担心自食其果。

2·The security deflector shield will be deactivated when we have confirmation of your code transmission.

当我们确认你们的密码之后，防护罩将会被消除。

3·Screw shield is a kind of crane accessories.

丝杠防护罩是起重机的一种配件。

4·Because this gives ie the setting, adding shield also is special be necessary.

因此给IE设置加上防护罩也是非常有必要的。

5·Factory workshop of the company holding the shield spot welders, fitters gloves hitting, drilling workers dig wearing flat mirror, wearing sunglasses cutting gas cutting work.

该公司机厂车间内焊工手持防护罩点焊，钳工戴着手套击打，钻工戴着平镜挖凿，气割工戴着墨镜切割。

包庇

1·It is common for police officers to shield each other from punishment, but the phenomenon reaches an extreme in Chicago.

警员间互相包庇以逃避处罚是常见的默契，但该现象在芝加哥已登峰造极。

2·He lied to the court to shield his friend.

他对法庭说谎以包庇自己的朋友。

屏

1·Nor is it clear how long its protective shield will be down.

而磁极的防护屏何时将失效也同样是不清楚。

2·The battens are partly creating a natural sunscreen and privacy shield on the vitrification.

木条一定程度上创造了自然遮光屏，透明化的隐私空间。

3·It is shown selecting suitable parameters of molecular shield on low-earth orbit, we can process super pure materials in extreme high vacuum.

计算结果指出：在近地轨道选择合适的分子屏参数，可以在极高真空环境下加工超纯材料。

4·A new extreme high vacuum molecular shield lab. On low-earth orbit is designed.

给出了一种新型的近地轨道极高真空分子屏实验室设计。

5·The perforating shield contributes a lot in improving the muffling effect and at the same time has a function of eliminating the pulsating sound in the engine exhausting noise.

穿孔屏对改善消声效果有较大的作用，同时，对发动机排气噪声中的脉动声有较好的消除作用；

(1)heat shield热屏；（航天器的）防热罩

(1)sword and shield剑与盾

(1)wind shield遮风屏；减阻帽

(1)water shield莼菜；防水罩，挡泥板；密封条

(1)protective shield防护屏；防护板

(1)hydraulic shield液压防护装置