词典释义：
a broad piece of metal or another suitable material, held by straps or a handle attached on one side, used as a protection against blows or missiles
盾，盾牌。
something shaped like a shield, in particular
盾形物，尤指：
a sporting trophy consisting of an engraved metal plate mounted on a piece of wood
（体育比赛的）盾形奖牌。
a US police officer's badge
（美国）警察的盾形徽章。
【纹章】 盾形纹章。
【地 质】 地盾。
a person or thing providing protection
保护人；保护物
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a protective coating of grease provides a shield against abrasive dirt. 涂一层防护油可防止导致磨损的污垢侵害。
a protective plate or screen on machinery or equipment
（机器或设备上的）防护装置（或屏幕）。
a device or material that prevents or reduces the emission of light or other radiation
防辐射装置（或材料）。
a hard flat or convex part of an animal, especially a shell
背甲；头胸甲；龟甲板。
protect (someone or something) from a danger, risk, or unpleasant experience
保护；防护
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he pulled the cap lower to shield his eyes from the glare 他把帽子往下拉，保护眼睛不受强光照射
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these people have been completely shielded from economic forces .这些人完全不受经济力量的影响。
prevent from being seen
不被看见
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the rocks she sat behind shielded her from the lodge .她坐在岩石后面，从小屋那边看不见她。
enclose or screen (a piece of machinery) to protect the user
安装防护装置（或防护屏）。
prevent or reduce the escape of sound, light, or other radiation from (something)
防止（或减少）辐射
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uranium shutters shield the cobalt radioactive source .铀遮光器屏蔽钴辐射源。
"Old English
