经过实践，第一项很容易做到；我们这里将就冬眠箱和冬眠条件分别说明，会涉及一些细节问题。
In practice the first is more easily accomplished. We will deal with both accommodation and conditions separately, and in some detail.
与松鼠、旱獭和许多其他林地动物不同，熊实际上并不冬眠。
Unlike squirrels, woodchucks, and many other woodland animals, bears do not actually hibernate.
他推断，已知的一些单细胞生物进入类似冬眠的状态，在没有空气和食物的情况下存活数年。
He reasoned that some single-celled creatures are known to enter a hibernation-like state and survive for years with no air or food.
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