I could see light through a small hole, high above me.

我能透过我头顶上的一个小洞看到亮光。

Synapsids had one hole in their lower temples; diapsids had two; euryapsids had a single hole higher up.

下孔亚纲在颞颥下部有1个孔；双孔亚纲有2个孔；调孔亚纲只有上部1个孔。