LEARNit Dictionary
double-blind
adjective
/ˌdʌbl ˈblaɪnd/
UK
/ˌdʌbl ˈblaɪnd/
US
1
(of a test) conducted so that neither the organizer nor any other people involved know any information that might influence the results
دو سوی کور, دو سو کور, دو طرفه کور