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прекрасно понимать stresses
gen.	be clear (on something) 4uzhoj); read smb. like a book (кого́-л.); understand perfectly well (Lenochkadpr); be well aware (Lenochkadpr); be quite aware (Lenochkadpr); fully well know (SirReal); know fully well (SirReal); fully realize (triumfov); know full well (Ремедиос_П); be acutely aware (of capricolya)
Игорь Миг	understand full well; have a pretty clear sense of; be cognizant of; be deeply aware of
Makarov.	read someone like the book (кого-либо); understand perfectly
slang	know perfectly well (Damirules)
прекрасно понимая
Игорь Миг	in the full knowledge that; knowing full well that

прекрасно понимать: 17 phrases in 6 subjects

American usage, not spelling	2
General	9
Informal	1
Makarov	2
Quotes and aphorisms	2
Rhetoric	1