里面，深处
1. inner part, interior, back (of a drawer, one's throat, etc.), depths (e.g. of a forest), recesses (e.g. of a cave), heart, end (of a road, garden, etc.)
noun (common) (futsuumeishi)
2. living quarters (at the back of a house), inner room
noun (common) (futsuumeishi)
3. recesses (of one's mind), bottom (of one's heart), behind (someone's words), mysteries (of an art)
noun (common) (futsuumeishi)