The stone which the builders refused is become the head stone of the corner 22匠人所弃的石头，已成了房角的头块石头。
2.
The excess water delivered through the buttresses emerges at the apex or head stone and overflows down their outer surfaces to create a contrasting movement or feature 过量水被交付通过支柱涌现在尖顶或头石头和溢出在他们的外表面下创造一个对比的运动或特点。
