◎ 绠短汲深 gěngduǎn-jíshēn

[My ability is unequal to the given task,for you cannot use a short rope to draw water from a deep weel] 拴捅的绳子很短,却要打深井里的水,比喻能力薄弱,难以胜任艰巨的任务;也比喻学识浅薄,不足以领悟深刻的道理。也作“短绠汲深”

短绠不可以汲深井之泉,知不几者不可与及圣人之言。——《荀子·荣辱》