用得著

用得着
yòngdezháo
  1. to be able to use; useable; to have a use for
  2. (in a question) to be necessary to

CEDICT

Entry Composition

1 用 yòng
  1. to use; to make use of; to employ
  2. (coverb) with; using
  3. to need; to have to (usu. used in the negative or in questions)
  4. usefulness; utility
  5. (bound form) expense; outlay
  6. (courteous) to eat; to drink
  7. (literary) hence; therefore
2 得著 dézháo to obtain