精煉

to refine (a substance) / to purify / to refine (one's skills, writing etc) / refined / polished / succinct / skilled / capable

essence / extract / vitality / energy / semen / sperm / mythical goblin spirit / highly perfected / elite / the pick of sth / proficient (refined ability) / extremely (fine) / selected rice (archaic)

to refine / to smelt

refinery (of oil etc)