факультатив | |
gen. | additional course; activity |
amer. | open classroom |
brit. | optional course |
ed. | elective; enrichment class; elective course |
insur. | facultative |
med. | elective practice |
ГПЗ | |
O&G, sakh. | gas treatment plant |
факультатив: 3 phrases in 2 subjects |
Insurance | 1 |
Sakhalin | 2 |