radiant heater

例句：

1. 1.The radiant heater in the living room is very energy-efficient.
   客厅里的辐射加热器非常节能。
2. 2. The radiant heater keeps the room warm and cozy during winter.
   辐射加热器在冬天保持房间温暖舒适。
3. 3. The radiant heater was installed to improve the heating efficiency of the building.
   安装辐射加热器是为了提高建筑物的供暖效率。