an animal whose body temperature varies with the temperature of its surroundings; any animal except birds and mammals
同义词：poikilotherm
ectotherm详细解释
ec.to.therm n.（名词）An organism that regulates its body temperature largely by exchanging heat with its surroundings; a poikilotherm.冷血动物：主要以与外界环境交换热量的方式来调节自身体温的生物；变温动物
