英语语法分析

Four avenues opened out of the small cavern which the great rock stood in.

大岩石所在的岩洞里有四条岔路。

The Spot: The Grand Canyon's Redwall Cavern

拍摄现场：大峡谷的红墙洞

This cavern knows no philosophers; its dagger has never cut a pen.

这窟窖不知道有哲学，它的尖刀从来没有削过一支笔。