究
  1. go into the whys and wherefores(=have the why and the wherefore)
  2. run to ground
  3. come down to bedrock
  4. cannot explain or find out why (because it's too confused or shifting so fast)
  5. plate Make a thorough investigation of basio-
  6. dig Make a thorough investigation of basio-
  7. Yanjingjiuwei
  8. Village pedantic language
  9. Put in a nutshell Into the problem
  10. Mo Ke ask for an explanation
  11. after all As for/to/regards it
  12. Pedant Heaven
  13. Get to the bottom of sth. County study