Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
trainee [treɪˈniː] n (hairdresser) учени́к#
trainee teacher студе́нт(ка#), практика́нт(ка#)
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.
Русский: