dans le dictionnaire PONS
ˈbrown coal SUBST no pl
- brown coal
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ˈcoal bed SUBST
- coal bed
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ˈcoal-black ADJ
- coal-black
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ˈcoal box SUBST
- coal box
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ˈcoal bun·ker SUBST
- coal bunker
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ˈcoal gas SUBST no pl CHIM
- coal gas
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coal hydro·gena·tion [-ˌhaɪdrəʤəˈneɪʃən, Am -haɪˌdrɑ:-] SUBST no pl CHIM
- coal hydrogenation
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- coal hydrogenation
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