钻研

鑽研
zuānyán
  1. to study meticulously
  2. to delve into

CEDICT

Entry Composition

1 钻 zuān
  1. to drill
  2. to bore
  3. to get into
  4. to make one's way into
  5. to enter (a hole)
  6. to thread one's way through
  7. to study intensively
  8. to dig into
  9. to curry favor for personal gain
2 研 yán
  1. to grind
  2. study
  3. research