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。
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。
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.
经过艺术家重塑的这张脸，可能属于一名男性也可能是女性，是以发现于一个熊冬眠洞穴里的部分头骨和下颚骨为基础建立的。
The artist's reconstruction - a face that could be male or female - is based on the partial skull and jawbone found in a cave where bears were known to hibernate.
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