youdao

Here's why: In 1830 a local official named George Rankin lowered himself into the cave on a rope tied to a protrusion in the cave wall.

原因如下：1830年，一位名叫乔治·兰金（George Rankin）的当地官员用一根绳子把自己吊入洞穴，这根绳子固定在洞穴壁的一个突出石块上。

youdao

My back was against the cave wall.

我的后背抵着山洞的墙。

youdao

I quickly stood up. My back was against the cave wall.

VOA: special.2010.07.10

Farther up the path are more cave homes with ruins of small stone rooms next to the wall of the canyon.

VOA: special.2010.07.05

The first is the "Frieze of Stags, " which shows several deer from the shoulder up migrating across the cave wall.

WSJ: Prehistoric but Far From Primitive | Cave Paintings of Lascaux | Field Museum | By Mark Yost

One thing's clear, however: The artist purposely chose to position each image above a protruding ridgeline that runs along the cave wall, symbolizing either the surface of the water or tall grass that's obscuring the lower half of the deer.

WSJ: Prehistoric but Far From Primitive | Cave Paintings of Lascaux | Field Museum | By Mark Yost

In his parable, prisoners are chained in a cave and only perceive the world as shadows on the wall.

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