名词
中文翻译：易燃粉末
同义词：
['flammable powders', 'ignitable powders']
例句：
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1.The pyrophoric powders were scattered all over the room.
易燃粉末四处散落在房间里。
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2.The firefighters used the pyrophoric powders to extinguish the flames.
消防员使用易燃粉末来扑灭火焰。
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3. The chemical factory was closed due to the presence of pyrophoric powders in the air.
由于空气中存在易燃粉末，化工厂被关闭了。