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出典:Wiktionary
From Middle English oneheede, onhed, anhede, from 古期英語 *ānhǣdu (“oneness, unity”), equivalent to one + -head. Cognate with Dutch eenheid (“a unit, unity, oneness”), German Einheit (“a unit, unity, togetherness”), Swedish enhet (“a unit, oneness, unity”).
onehead (uncountable)
onehead