他們是俄羅斯人。

They're Russian.

They are Russian.

Source: Tatoeba

Sentence Composition

1 他們 tāmen they; them
=2 是 shì
  1. to be (followed by substantives only)
  2. correct; right; true
  3. (respectful acknowledgement of a command) very well
  4. (adverb for emphatic assertion)
=2 是 shì variant of 是 shì
3 俄羅斯人 Éluósīrén Russian (person)