◎鞭長(zhǎng)莫及biāncháng-mòjí
(1)[although the whip is long，it does not reach the horse's belly——cannot do it much as one would like do] 本意為馬鞭雖長(zhǎng)，但打不到馬肚子上。喻雖有力，力量亦達(dá)不到
雖鞭之長(zhǎng)，不及馬腹?！?span id="2cczriw" class="bold">《左傳·宣公十五年》
(2) 后用以喻力不能及。亦作“鞭不及腹”
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