名词
中文翻译：防护门
同义词：
['protective door', 'security door']
例句：
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1.The shield door is designed to protect the inside from outside intruders.
防护门设计用来保护内部免受外部入侵者侵扰。
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2.The security guard at the entrance had to shield the door with his body to prevent any trespassers.
入口处的保安不得不用身体挡住门，以防止任何闯入者。
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3. The shield door was made of thick steel and could withstand a lot of force.
防护门由厚钢制成，能够承受很大的力量。