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to phrases
conservation de l'énergie
el. Energiekonservierung f
el., polit. rationelle Energieverwendung
environ., energ.ind. Energieeinsparung f; Energiesparen n
nat.res. Energieeinhaltung f
nat.sc. Energieerhaltung f; Erhaltung der Energie
conservation de l' énergie: 5 phrases in 4 subjects
Astronomy1
Chemistry2
Environment1
Physical sciences1

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