Pevear and Volokhonsky, who are married, work in an unusual fashion. She, a native Russian speaker, renders each book into entirely literal English. He, who knows insufficient Russian, then works on the rendering with the intention of keeping the language as close to the original as possible. What results from this attempt at unprecedented fidelity is a word-for-word and syntax-for-syntax version that sacrifices tone and misconstrues overall sense.
Sounds a bit like using Google Translate. Nuts.