cold-blooded
UK [ˌkəʊld'blʌd.ɪd] US [ˌkoʊld-] adjective
■describes animals that can only control their body heat by taking in heat from the outside or by being very active （动物）冷血的•Snakes and lizards are cold-blooded animals.蛇和蜥蜴都是冷血动物。 Compare warm-blooded behaving in a very cruel way with no sympathy for other people 冷酷无情的，残忍的•a cold-blooded murder残忍的谋杀 |