cold-blooded

剑桥词典

Cold-blooded animals 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。
比较
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 返回 cold-blooded