1. orthopedist, orthopaedist   [gu;gu;gu] ke yi shi ，[gu;gu;gu] ke yi shi   jing shen bing yi sheng   shen [jing;jing] xue [jia;jia;jie]   [ni;niao;sui] ke yi shi   Hint Half-n-half Clue   2. gerontologist   sheng li zhi liao shi   shen zang bing xue [jia;jia;jie]   xin li xue [jia;jia;jie]   lao ren xue [jia;jia;jie]   Half-n-half Clue   3. pathologist   shen zang bing xue [jia;jia;jie]   bing li xue [jia;jia;jie]   ying yang [jia;jia;jie]   [gu;gu;gu] ke yi shi ，[gu;gu;gu] ke yi shi   Half-n-half Clue   4. obstetrician   sheng li zhi liao shi   jing shen bing yi sheng   shen [jing;jing] xue [jia;jia;jie]   chan ke yi sheng   Half-n-half Clue   5. pediatrician, paediatrician   er ke yi sheng ，er ke yi sheng   [ni;niao;sui] ke yi shi   bing li xue [jia;jia;jie]   shen zang bing xue [jia;jia;jie]   Half-n-half Clue   6. gynecologist, gynaecologist   ai [zheng;zheng] yi shi   sheng li zhi liao shi   [gu;gu;gu] ke yi shi ，[gu;gu;gu] ke yi shi   fu chan ke yi shi ，fu chan ke yi shi   Half-n-half Clue   7. cardiologist   wai ke yi sheng   er ke yi sheng ，er ke yi sheng   xin zang ke yi shi   shou zu bing yi sheng   Half-n-half Clue