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14005549-n perpetual motion
SensesEng
motion that continues indefinitely without any external source of energy /
impossible in practice because of friction /
Wordnet ChineseGb
永恒运动 +
Wordnet GermanGer
Perpetuum mobile +
Wordnet EnglishEng
103 perpetual motion +
Wordnet FrenchFra
mouvement perpétuel +
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