1. polish
2. study of
3. sharpen
Kanji
1. polish
2. study of
3. sharpen
1. research; study
1. research institute; (research) laboratory
1. training (esp. in-service); induction course
1. laboratory
2. seminar room
3. professor's office
1. researcher
1. researcher; lab worker
1. researcher; student (of)
1. grinding; polishing
2. refining (a skill, knowledge, etc.); applying oneself (to study)
1. results of a scientific investigation; findings