Russian | English |
ранее считалось, что | be originally believed to be (+ past participle: The curious formations were originally believed to be found only in Africa's Namib Desert until scientists discovered a patch of the rings in a particularly arid part of Australia. coasttocoastam.com ART Vancouver) |
сложная ситуация, ранее остававшаяся незаметной | can of worms |