不可企及 [- - qǐ jí]far beyond one's reach; can't compare anywhere with sb.; beyond one's power of attainment; inimitable; lag far behind; matchless; only look but cannot catch up with; unable to catch up with:
•¶ 按我们的能力这种目标是不可企及的。 It's far beyond reach of our ability to obtain such aim.