吃透

chītòu

to have a thorough understanding

Wiktionary

Entry Composition

=1 吃 chī
  1. to eat; to consume
  2. to eat at (a cafeteria etc)
  3. to eradicate; to destroy
  4. to absorb
  5. to suffer (shock, injury, defeat etc)
=1 吃 chī variant of 吃 chī
=2 透 tòu
  1. (bound form) to penetrate; to seep through
  2. to tell secretly; to leak
  3. thoroughly; through and through
  4. to appear; to show
=2 透 shū
  1. (obsolete) startled; alarmed; disturbed
  2. startled; alarmed; disturbed