homeotherm       
noun [ C ]  biology specialized uk/ˈhəʊ.mi.əʊˌθɜː.m/ us/ˈhoʊ.mi.oʊˌθɝːm/
 恒温动物
a homeothermic animal (= one able to keep its body temperature at the same level despite changes in the temperature around it)
  You are a homeotherm, just like your dog, a tiger, or an elephant.  你是恒温动物,就像你的狗,还有老虎或大象一样。 
 Whales, dolphins, seals, and other marine mammals are homeotherms. 鲸鱼、海豚、海豹以及其他海洋哺乳动物属于恒温动物。 
 See: homeothermic
 - More examples
- A newborn infant is a homeotherm, but over a long period of time, cannot maintain the thermal processes.
- I'd like to celebrate being a warm-blooded homeotherm by visiting the Hall of Mammals at the Museum of Natural History.
- Big crocodiles are homeotherms which can keep a stable body temperature once warm.