n.变温（冷血）动物

The poikilothermic reptiles have difficulty regulating their body temperature in extreme weather conditions.
这种变温动物在极端天气条件下难以调节体温。
Many insects, like butterflies and lizards, are poikilotherms, meaning their metabolism is highly influenced by the ambient temperature.
许多昆虫，如蝴蝶和蜥蜴，是变温动物，其新陈代谢深受周围温度的影响。
The Arctic fox is an example of a poikilothermic animal that adapts to its cold environment by growing thick fur during winter.
北极狐就是一个变温动物的例子，它通过冬季长出浓密的皮毛来适应寒冷环境。
Unlike mammals, which are endothermic, birds and reptiles are primarily poikilothermic, with their body temperatures varying depending on external conditions.
与恒温哺乳动物不同，鸟类和爬行动物主要是变温动物，其体温随外界条件变化。
The desert tortoise, being a poikilotherm, relies heavily on the diurnal cycle to maintain its body temperature during hot days.
沙漠龟作为变温动物，严重依赖日间和夜间循环来保持在炎热日子的体温。
Some scientists argue that certain prehistoric creatures, like dinosaurs, were also poikilothermic due to the lack of a stable global climate.
一些科学家认为，由于地球气候不稳定，某些史前生物，如恐龙，可能也是变温动物。
Poikilothermic organisms often have a lower metabolic rate compared to endotherms, allowing them to conserve energy in cooler climates.
变温生物通常比恒温动物代谢率低，这使它们在较冷的环境中能节省能量。
The study found that the metabolic flexibility of poikilotherms allows them to thrive in environments with fluctuating temperatures.
研究发现，变温动物的代谢灵活性使其能在温度波动的环境中生存。
In contrast to warm-blooded animals, poikilotherms experience a decline in activity during periods of low temperatures, as their internal heat source weakens.
相比于恒温动物，变温动物在低温时期活动会减弱，因为它们内部的热量来源减弱。
Understanding the biology of poikilotherms is crucial for predicting how they might respond to future climate change scenarios.
理解变温动物的生物学对于预测它们如何应对未来气候变化至关重要。