Four-syllable transliteration of a Russian surname.
萨 (sà) for 'Sa-',
瓦 (wǎ) for '-va-',
若 (ruò) for '-rov/-rof-' middle,
夫 (fū) for the closing '-v/-ov' (the Slavic patronymic ending). Compare
苏沃洛夫 (Sūwòluòfū), the more standard rendering for Russian general Alexander Suvorov.