善於

善于
shànyú
to be good at; to be adept at

CEDICT

Entry Composition

1 善 shàn
  1. good (virtuous)
  2. benevolent
  3. well-disposed
  4. good at sth
  5. to improve or perfect
2 於 yú
  1. (of time or place) in; at; on
  2. (indicating any indirect relation) to; toward; vis-à-vis; with regard to; for
  3. (indicating a source) from; out of
  4. (used in comparison) than
  5. (used in the passive voice) by