Groundhogs spend the winter hibernating in a specially dug hibernation burrow, their breathing and heartbeats slowed to a snail's pace.
土拨鼠在一个特别的冬眠洞穴中冬眠，它们的呼吸和心跳慢到和蜗牛差不多。
Harlow says that he too has listened to hibernating bear hearts going still for a stretch and then kerthumping arrhythmically.
哈洛称他也听见过冬眠中的黑熊心率在长时间的静止之后没有节奏的跳动起来。
Groundhogs spend the winter hibernating in a specially dug hibernation burrow, their breathing and heartbeats slowed to a snail's pace, their body temperatures not too far above freezing.
土拨鼠在一个特别的冬眠洞穴中冬眠度过冬天，它们的呼吸和心跳慢到和蜗牛差不多，体温比冰点稍高一点。
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