Some scientists contend that manyspeciesof dinosaur had a metabolism more like a warm-blooded mammal's than a cold-blooded reptile's.
一些科学家认为,许多种类的恐龙的新陈代谢更像温血哺乳动物,而不是冷血爬行动物。
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Remarkably, despite significant differences in habitat and behavior, manyspeciesof lepidoptera have population cycles of similar length, between eight and eleven years.