giving up of heat

例句：

1. 1. The hot summer sun isslowly giving up its heat.
   炎热的夏天太阳正在慢慢失去它的热量。
2. 2. The car engineis giving up its heat to cool down.
   汽车发动机正在努力散热。
3. 3. The firefighters are giving uptheir heat to fight the fire.
   消防员们正在努力扑灭大火。