radiator

/ˈreɪdiˌeɪtər/

any object that radiates energy

中文释义：散热器；暖气片

The old radiator in the corner of the room was not heating properly.

房间角落里的旧暖气片供暖不正常。

Car radiators are designed to dissipate heat from the engine coolant.

汽车散热器旨在散发发动机冷却液的热量。