各位老师好：我在阅读英语小说《坟场之书》时遇到一句话（下文中加粗部分），看不太明白还请给位老师帮忙解答，谢谢！

The old Roman’s hair was pale in the moonlight, and he wore the toga in which he had been buried, with, beneath it, a thick woolen vest and leggings because this was a cold country at the edge of the world, and the only place colder was Caledonia to the North, where the men were more animal than human and covered in orange fur, and were too savage even to be conquered by the Romans, so would soon be walled off in their perpetual winter.

书中的中文翻译为：除了北边的爱尔兰，没有地方比这更冷了。 可是我自己的理解怎么也和这翻译对不上，还请各位老师指点。

PS.如有可能还请老师们讲解一下相关比较句的用法，谢谢！