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биение сердца stresses
gen.	beating of the heart; the beat of the heart; the throb of one's heart; heart beating (bigmaxus); heart beat; heartbeat; the beatings of the heart
Gruzovik, cardiol.	heartbeat
Makarov.	the throb of one's heart; the throbbings of the heart

биение сердца: 12 phrases in 4 subjects

General	8
Makarov	2
Obsolete / dated	1
Psychology	1