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