English ⇄ Russian +

during ... stage stresses
book.	на стадии (igisheva); на этапе (igisheva)
hist.	в период (Alex_Odeychuk)
progr.	во время (Alex_Odeychuk)

during ... stage : 21 phrases in 7 subjects

Astronautics	2	Makarov	1	Theatre	1
General	10	Programming	5
Geology	1	Radiolocation	1