这个故事是我妈妈的妈妈的妈妈讲给我听的。一离地表仅一百多米有余,地上的世界几乎已触手可及。队员们不禁兴奋地丢弃了手中的铁锹,以双手挖掘剩下的土地。松软的泥土比先前的岩层挖掘难度降低不少,却极易坍塌。还好有防护服掩体,排方机得以有空当将挖掘下来的泥土传送到闲置地 This story is told by my mother’s mother’s mother. One more than a meter from the surface more than the earth’s world is almost within reach. The team members can not help but excitedly dropped the shovel in his hand, with both hands to dig the rest of the land. Soft soil excavation than the previous difficulty to reduce a lot, but easily collapsed. Fortunately, there are protective clothing bunker, row machine available when the soil will be excavated to idle