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what is the average velocity of an air laden swallow

INTO JAPANESE

空気を含むスワローの平均速度は何ですか？

BACK INTO ENGLISH

What is the average speed of swallow containing air?

INTO JAPANESE

嚥下している空気の平均速度は？

BACK INTO ENGLISH

What is the average speed of swallowing air?

INTO JAPANESE

嚥下空気の平均速度はいくらですか？

BACK INTO ENGLISH

What is the average speed of swallowing air?