pons asinorum

• 拉丁语短语，意为“驴子的桥”，历史上用于指代区分能理解高级概念者与不能者的难题或考验，尤见于几何或逻辑学中。

A Latin phrase meaning 'bridge of asses,' historically used to refer to a difficult problem or test that separates those who can understand advanced concepts from those who cannot, particularly in geometry or logic.

1. Bridge of AssesC2formal

   A nickname for the fifth proposition in Euclid's Elements, which states that the base angles of an isosceles triangle are equal. It is considered a difficult concept for beginners.

   驴桥

   • Many geometry students struggle with the pons asinorum.
   • The teacher explained the pons asinorum using a simple diagram.
   • Understanding the pons asinorum is a milestone in learning Euclidean geometry.

2. A difficult test for beginnersC2formal

   Any challenging problem or concept that tests the understanding of a novice in a particular field.

   驴桥

   • The first programming assignment was the pons asinorum for the new coders.
   • In philosophy, the problem of free will is often considered a pons asinorum.
   • The final exam served as a pons asinorum for the students.