To help ease the pain, heatcan be applied to the area with a hot water bottle.
可以用一个热水瓶在疼痛部位热敷来缓解疼痛。
《柯林斯英汉双解大词典》
2
When it grows hot, heatcan affect human health.
天气变热时，高温会影响人体健康。
3
The bigger the animal is, the lower its surface-to-volume ratio; for every ounce of body mass, there is proportionately less surface through which heatcan escape.