力所能及

lìsuǒnéngjí
  1. as far as one's capabilities extend (idiom); to the best of one's ability
  2. within one's powers

CEDICT

Entry Composition

1 力 lì
  1. power
  2. force
  3. strength
  4. ability
  5. strenuously
2 所能 suǒnéng
  1. according to one's capabilities
  2. what sb is capable of
3 及 jí
  1. and
  2. to reach
  3. up to
  4. in time for