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economias de energia
environ., energ.ind.	energibesparelse
economia de energia
econ.	energibesparelse
environ.	energibesparelser
environ., energ.ind.	energispareindsats; energiøkonomisering
economia da energia
environ.	energibesparelser

economias de energia: 11 phrases in 4 subjects

Energy industry	4
Environment	4
General	2
Natural sciences	1