officiate russian

• отслу́живать

  to serve out (one's term), to complete (one's service), to do (one's duty)

  to officiate (a service), to hold (a service), to celebrate (mass)

• рефери́ровать

  to abstract, to summarize, to make a synopsis of

  to review, to referee, to peer-review

  to report on, to give a talk on, to present

  to referee, to umpire, to officiate