第一个as 是因为的意思...第二个as 是当作,像...的意思...
不是as .as...的词组...
(Through their reading) 通过阅读
+
they find a deeper significance to life 他们找到了生命更加深刻的意义
+
because books acquaint them with life (in the world) (as it was and it is now.) 因为书籍使他们了解在这个世界上的生命的过去和现在
我把as 改成了because ,你就看懂了吧...