其他一些动物能数到比3还多的数。
倘若两数的差距足够大,人类则可以轻松区分大小,那么动物们也具备这样的能力吗?
Humans can do this with ease - providing the ratio is big enough - but do other animals share this ability?
不论如何,这些动物最为著名的还要数它们的叫声。
However, these animals are perhaps best known for their vocalizations.
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