冷血动物

Explanation: Body temperature changes with environmental temperature changes in animals. Metaphor of a lack of feeling, a cold person Duirenduishi 　　Usage: Partial official; as object, attribute; containing derogatory 　　Source: Qian, "Besieged City": "Lee had stung like a winter's cold-blooded, give Gary a compliment in public may spring air into the body, squirming like to live."