German ⇄ Arabic Bulgarian Chinese Czech Danish Dutch English Finnish French Greek Hungarian Irish Italian Japanese Polish Portuguese Romanian Russian Spanish Swedish Ukrainian

unterirdisch adj. stresses
gen.	подземный; подпольный; тайный; нелегальный; негласный
oil	подземный (напр., о трубопроводе)

unterirdische: 236 phrases in 35 subjects

Agriculture	3
Artillery	2
Aviation	3
Biology	1
Botany	6
Brewery	1
Chemistry	5
Construction	40
Electrochemistry	2
Electronics	12
Energy industry	2
Entomology	1
Environment	2
Food industry	4
Forestry	2
General	5
Geology	15
Geophysics	8
High energy physics	2
Hydrology	6
Hygiene	2
Medical	1
Melioration	2
Military	18
Mining	17
Missiles	4
Nuclear and fusion power	5
Oceanography & oceanology	2
Oil / petroleum	18
Rail transport	5
Road works	1
Technology	13
Telephony	1
Topography	1
Water supply	24