5, 6, 7, go right, 1, 2, back, 5 6 7
向右 1 2 后退
After switching on powerful arc lights, they saw great stalagmites -- some of them over forty feet high -- rising up like tree-trunks to meet the stalactites suspended from the roof.
他们打开强力弧光灯,看见一株株巨大的石笋,有的高达40英尺,像树干似地向上长着,与洞顶悬挂下来的钟乳石相接。