Pronunciation Challenge 【TED-Ed】Why the octopus brain is so extraordinary - Cláudio L. Guerra

Host : Benson Tsai
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How smart is the octopus?

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Those heads contain impressively large brains, with a brain to body ratio similar to that of other intelligent animals, and a complex nervous system with about as many neurons as that of a dog.
Original Video： 【TED-Ed】Why the octopus brain is so extraordinary - Cláudio L. Guerra

Key Vocabulary

1. ratio

ratio

[ˈreɪ.ʃi.oʊ] (n.)

2. complex

complex

[ˈkɑːm.pleks] (adj.)

3. nervous

nervous

[ˈnɝː.vəs] (adj.)

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