1. The cave was filled with stygian darkness, making it nearly impossible to see anything inside.

这个洞穴里弥漫着一片幽黑的黑暗，几乎无法看见里面的任何东西。

2. The room had no windows and only a single stygian lamp, casting eerie shadows on the walls.

这个房间没有窗户，只有一盏乌黑的灯，将可怕的阴影投射在墙上。