double-blind study
dubbelblinde studie
uphononongo olufihlwe macala
lucwaningo lolufihlwe nhlangotsi totimbili
irhubhululo elifihlelwe iinqhema zombili
phitlhelapeditekelelo
nyakišišophihlegopedi
phuputso e patetsweng bobedi
ngudotshipofu ya vhadzheneli na vhaṱoḓisisi
ndzavisiso wo tumbelela mitlawa hamimbirhi