音标：[ˈinfrəˈred ˈfri:kwənsi] ；

[医]红外频率

词型变化：名词复数形式 : infrared frequencies

【近义词】

infrared红外线的

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Here's the news at 11:30. Thousands of people have marched through the centre of Corby in Northamptonshire to protest against plans to close the steel works, the town's major employer. The marchers de

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