資料來源 : pyDict

可達到;所及

資料來源 : Webster's Revised Unabridged Dictionary (1913)

Attainability \At*tain`a*bil"i*ty\, n.
   The quality of being attainable; attainableness.

資料來源 : WordNet®

attainability
     n : the state of being achievable [syn: {achievability}, {attainableness}]