| ignitable | |
| commun. coal. chem. | inflamable |
| material | |
| gen. | material |
| account. | importante; significativo |
| environ. | materiales |
| fin. | composición |
| met. | materia prima |
| patents. | materia |
|
spontaneously : 10 phrases in 5 subjects |
| Chemistry | 2 |
| Coal | 1 |
| General | 4 |
| Materials science | 1 |
| Medical | 2 |