oxyacetylene
[ˌɒksɪəˈsetɪli:n]noun
(uncountable noun) ossiacetilene m
oxyacetylene
[ˌɒksɪəˈsetɪli:n]compound
[torch] ossiacetilenico ( f ossiacetilenica)
Complétez la séquence avec la proposition qui convient.
… aren't dangerous and need to be protected.