Wool traps your bodyheat, keeping the chill at bay.
羊毛织物能留住你的身体热量,阻挡寒气。
《柯林斯英汉双解大词典》
2
We also know that large animals can't easily get rid of excess bodyheat.
我们也知道,大型动物不容易排出身体多余的热量。
3
Blood vessels in the head tighten to stop the loss of bodyheat and then relax to let blood flow rise; that sudden rush of blood is what causes the headache.