All Ferrets are born deaf. They will begin to hear around 34 days.

所有雪貂生下来是听不见的。他们的听觉大约在出生34天后出现。

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Ferrets are another mammalian species known to be susceptible to infection.

雪貂是另一种已知易受感染的哺乳类动物物种。

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Ferrets are another mammalian species known to be susceptible to infection.

雪貂是另一种已知易受感染的哺乳类动物物种。

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