noun · a machine or device used to blow air into a furnace or fire to increase the heat for smelting or forging

这台大型鼓风机不停地向炼钢炉内吹入空气。

noun · a mechanical device used to create a current of air for ventilation or to move air through a system

他使用手持式鼓风机清理草坪上的落叶。