一种观点认为，这些画是兽群季节性迁徙的记录。
One opinion is that the paintings were a record of seasonal migrations made by herds.
季节性迁徙是另一种逃避方式，特别是对大型哺乳动物或鸟类来说尤为如此。
Seasonal migration is another form of escape, especially for large mammals or birds.
在撒哈拉沙漠，和其它大多数食草动物不同，长颈鹿在干旱季节不迁徙(离开它的家)，因为它可以从吃的叶子中获得充足的水分。
Unlike most of the other grass-eaters in the Sahara, the giraffe doesn't migrate (leave its homeland) during dry seasons because it gets enough water from the leaves it eats.
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