凹入

āorù
  1. recessed
  2. concave

CEDICT

Entry Composition

1 凹 āo concave; depressed; sunken; indented; female (connector etc)
2 入 rù
  1. to enter; to go into
  2. to join; to become a member of
  3. (bound form) to conform to (as in 入時 rùshí)
  4. abbr. for 入聲 rùshēng
  5. (on product packaging, after {number n} + {classifier}) containing (n pieces) (from Japanese 入 "iri")

Related entries

凹進 āojìn
  1. concave
  2. recessed
  3. dented
隱藏 yǐncáng
  1. to hide
  2. to conceal
  3. to mask
  4. to shelter
  5. to harbor (i.e. keep sth hidden)
  6. to hide oneself
  7. to lie low
  8. to nestle
  9. hidden
  10. implicit
  11. private
  12. covert
  13. recessed (lighting)
泳池被隱藏在地板之下。

The swimming pool is hidden under the floor.

Source: Tatoeba