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промучивать v stresses
gen.	elute; free from sediment (by rinsing, washing); purify (by rinsing, washing)
Gruzovik	purify by rinsing, washing (impf of промутить); free from sediment by rinsing, washing (impf of промутить); elute (extract [one material] from another, usually by means of a solvent mondofacto.com)
промучиваться v
gen.	elute; free from sediment (by rinsing, washing); purify (by rinsing, washing)