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