MDBG: as far as one's capabilities extend (idiom); to the best of one's ability; within one's powers
LDC:
CDict: (saying) that which is in one's power to do'
Click icons for complete source definitions (not available on mobile). icon in each entry gives source attribution. Want to improve this definition? Check to see if 力所能及 is already in CC-CEDICT. If not, you can add it. (Why?)