burrow

1. 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。

2. Marine scientists measure its abundance by dragging a sledge equipped with video cameras along the seabed and counting the number of holes ( a well-maintained burrow being the sign of a happy prawn ) .

海洋科学家沿着海底拖曳装有摄录机的雪橇，并计算了孔洞数量（维护良好的洞穴是快乐大虾的标志），测量出其蕴藏丰富。

3. The researchers could thus put three females into a burrow and allow them to compete yet , by ensuring that only one of those females had mated with a fertile male , they could be sure that all the grubs in a burrow were hers .

研究人员因此能够将三只雌性蜣螂放入洞穴使彼此竞争，但要先确保只有一只雌性蜣螂与能生育的雄性蜣螂交配，如此研究人员才能确定洞里所有幼虫都是她的。

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