Şunu aradınız:: 刃先を入れる必要がある (Japonca - İngilizce)

"ひ... 皮膚はかなり硬いので ナイフを押す様にし" "石の硬い触感があるまで 刃先を入れる必要がある"
the... the skin should be pretty tight, so you just need to press the knife through the flesh until you feel the hard surface of the stone.

総入れ歯にする必要があります。
you have to have a full denture.