Andrew McKechnie, an ornithologist at the University of Pretoria in South Africa.

南非比勒陀利亚大学的鸟类学家安德鲁·麦凯尼说到。

McKechnie and his colleagues have studied hummingbirds at extreme elevations in the Peruvian Andes.

麦凯尼和同事研究了秘鲁安第斯山脉极端海拔地区的蜂鸟。

McKechnie and his colleagues have studied hummingbirds at extreme elevations in the Peruvian Andes.

McKechnie 和他的同事研究了秘鲁安第斯山脉极端海拔地区的蜂鸟。

Now McKechnie and his colleagues have found another energy-saving adaptation: the high-mountain hummingbirds can lower their body temperature by extreme amounts at night—going into a state called torpor.

现在 McKechnie 和他的同事们发现了另一种节能适应方法：高山蜂鸟可以在夜间极度降低体温——进入一种称为麻木。