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тщетные усилия stresses
gen.	lost labor; lost labour; barren efforts; lost efforts; vain attempts (kee46); unavailing efforts; nothing to show for one's efforts (VLZ_58)
adv.	vain efforts
inf.	piss up a rope (fa158); efforts in vain (Val_Ships)
mil.	futile efforts
тщетное усилие
gen.	ineffectual effort; bootless effort; ineffective effort
Makarov.	lost effort

тщетные усилия: 4 phrases in 2 subjects

General	3
Makarov	1