Definition
To attempt to specify details about something that is inherently vague or impossible to know with certainty; to engage in a futile effort.
試圖為無法確切了解的事物提供精確的細節；徒勞無功。
Trying to predict the exact direction of the economy is like nailing jelly to the wall; it's simply not possible.
試圖預測經濟的確切走向就像把果凍釘在牆上一樣，根本不可能。
When asked to elaborate on his abstract artistic concept, he felt like he was nailing jelly to the wall.
當被要求詳細說明他的抽象藝術概念時，他感覺就像在把果凍釘在牆上一樣。
Trying to define the feeling of love exactly is like nailing jelly to the wall, as it is so complex and subjective.
試圖準確定義愛的感覺就像把果凍釘在牆上一樣，因為它非常複雜且主觀。