down level

: 55 phrases in 19 subjects

Architecture	1
Astronautics	1
Aviation	1
Economics	1
Figurative	1
General	19
Hydraulic engineering	1
Information security and data protection	1
Makarov	10
Mathematics	1
Military	1
Oil / petroleum	1
Oil and gas	2
Politics	2
Programming	1
Quantum electronics	1
Rail transport	2
Technology	6
Tengiz	2