1. So, from the great cliff's base, jut spokes of rock crossing from bank to bank, intersecting ditches until the pit's hub cuts them off from meeting. 
   就像这样从岩石的基础有危岩通出去而跨越堤岸和壕沟，降到那把它们截断和集合起来的井。
2. groundwater flow into foundation pit 
   基坑涌水
3. ventilation for deep open pit 
   深凹露天矿通风
4. A pit; a hollow. 
   坑；凹地
5. water gushing in pit-gallery 
   坑道突水

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• 1. 井口出车台
  pit 煤矿...pit bank 井口出车台...pit barring 矿井支架
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