The second most abundant gas in the atmosphere is oxygen, which makes up about 21% of the total volume. V3 – Sentence Mining Club

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著者: eigochallenge

The second most abundant gas in the atmosphere is oxygen, which makes up about 21% of the total volume. V3

大気中で2番目に豊富なガスは酸素で、全体量の約21％を占めています。

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