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English
[en]
This is also seen in birds and many non-avian dinosaurs, which have air sacs to further aid in respiration.
Korean
[ko]
이런 공기흐름은 새와 새가 아닌 공룡에서도 보이고, 이들은 호흡을 더 원활히 하기 위해 기낭을 가지고 있었다.
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