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насколько нам известно stresses
gen.	to the best of our knowledge
Игорь Миг	it is understood that
dipl.	to the beat of our knowledge (bigmaxus)
law	to our knowledge (Leonid Dzhepko)
Makarov.	as we know; as far as our knowledge goes; as far as we know; best of our knowledge; for all we know
math.	as far as we know; we understand that
quot.aph.	as far as we're aware (Alex_Odeychuk)
насколько нам мне известно
gen.	insofar as I am aware (Lavrov); to the extent of our knowledge (Lavrov)
насколько нам достоверно известно
gen.	so far as we are aware (Gr. Sitnikov)