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Sentence

口こう腔こう内ないを清せい潔けつに保たもつことは虫むし歯ば予よ防ぼうに重じゅう要ようです。

Span Details

口こう腔こう

oral cavity; mouth

を

object marker

grammar

清せい潔けつ

clean; hygienic; sanitary

na-adjective, noun

direction, time, indirect object, or target marker

keep; maintain; preserve

should; it is important to; I advise that

noun, noun suffix

虫むし歯ば

cavity; tooth decay; decayed tooth

予よ防ぼう

prevention; protection; precaution

noun, suru verb

direction, time, indirect object, or target marker

重じゅう要よう

important; essential; significant