difficultly
| volatile
| difficultly | |
| gen. | difficulté |
| volatile | |
| gen. | instable |
| chem. | fugitif; alcoolique |
| earth.sc. | volatil |
| el. | non remanent |
| forestr. | substance volatile |
| volatiles | |
| gen. | émanations volcaniques |
| |||
| difficulté | |||
|
difficultly : 4 phrases in 2 subjects |
| Chemistry | 3 |
| Metallurgy | 1 |