She hid her true feelings behind a shield of cold indifference.

她把自己的真实感情掩藏在一副冷漠的外表后面。

《牛津词典》

He used his left hand as a shield against the reflecting sunlight.

他用左手遮挡反射过来的阳光。

《柯林斯英汉双解大词典》

As lava flows and spreads to form a shield volcano, the volcano's eventual height depends on the new mountain's ability to support its own weight.

随着熔岩流动和扩散从而形成盾状火山，这座火山的最终高度取决于这座新火山支撑自身重量的能力。

youdao

This could be a serious problem. The shield protected the spacecraft from burning up from the extreme heat of re-entering the Earth's atmosphere.

VOA: special.2009.06.17

The Persian infantry did not have heavy armor, they did not have that kind of a shield, they had wicker shields; fortunately, we have vase paintings that show us Persians.

波斯步兵没有重装甲,他们没有那种盾,他们只有藤条盾,很幸运,我们找到了展示波斯人图景的花瓶

耶鲁公开课 - 古希腊历史简介课程节选

Now, that's a very important point, because why in the world would you give a shield of the kind I am describing, for a man to defend himself, if you imagine him standing by himself anywhere, if you imagine him any distance from the rest of the guys fighting alongside of him.

这点非常关键,那就是到底为什么要将,这样一种盾牌,给士兵们使用,想象一下这个场景,这个士兵在战场的某个角落孤军奋战,与其它友军士兵相隔甚远

耶鲁公开课 - 古希腊历史简介课程节选

Still, doubts that this will offer much of a shield under real-life conditions lead to grousing.

FORBES: Magazine Article

Instinctively, he puts his long scarf up to his face as a shield against the dust.

NPR: 'The Swallows of Kabul' Book Excerpt

The brain not just as a tool for the senses but as a shield against them.

FORBES: Ferienne And The Doors Of Perception