flat, flatways, flatwise, prone
adverb
Он упа́л плашмя на пол.
He fell flat on the floor.
Том споткну́лся и упа́л плашмя лицо́м в снег.
Tom tripped and fell flat on his face in the snow.
Том плашмя упа́л на пол.
Tom fell flat on the floor.
Том упа́л плашмя лицо́м вниз.
Tom fell flat on his face.
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