Last Updated：2025/12/01
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Geologists estimate that the mountain range formed over several mega-annums of tectonic activity.
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Geologists estimate that the mountain range formed over several mega-annums of tectonic activity.
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Related words
mega-annums
Noun
form-of
plural
Japanese Meaning
「mega-annums」は「mega-annum」の複数形で、百万年を意味する時間の単位（複数）を指します。
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