translate serves to translate the gender of a participant to a word in another language. If the first parameter is 'f' ('m', 'a'), the second (third, fourth) parameter will be returned. If the first parameter is neither 'f' nor 'm' nor 'a', the first parameter will be returned. You can use this expression:
translate([Sex];"Women";"Men";"Agender")
Translate is equivalent to:
translate(a; b; c; d) := switch([a]="f";[b]; [a]="m";[c]; [a]="a";[d]; 1;[a])