名词
中文翻译：Unknown
同义词：
['guard', 'protector', 'armor']
例句：
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1.The shield was made of metal and had a thick layer of leather on the inside.
这个盾牌是用金属制成的，里面还裹着一层厚厚的皮革。
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2. The knight used his shield to block the blow from the sword.
骑士用他的盾牌挡住了剑的攻击。
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3.The shield was a symbol of bravery and strength in medieval times.
在中世纪，盾牌是勇敢和力量的象征。