Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
know [nəu] (pt knew) (pp known) vt (facts, people) знать (impf)
to know how to do уме́ть (impf) +infin
to know about or of sth/sb знать (impf) о чём-н/ком-н
to get to know sth (news) узнава́ть*(узна́ть*perf) что-н
to get to know sb (more intimately) узнава́ть*(узна́ть*perf) кого́-н побли́же (get acquainted) знако́миться*(познако́миться*perf) с кем-н
to get to know about узна́ть (perf) о +prp
as far as I know наско́лько мне изве́стно
yes, I know да, зна́ю
I don't know не зна́ю
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.
Русский: