pit hole 洼地
hole in soaking pit 均热炉坑
open pit middl-length hole blasting 露天中深孔爆破
open-pit deep hole 露天深孔
open-pit mine deep hole 露天矿深孔
deep hole of open pit 露天矿深孔
blast hole pattern inopen pit 露天矿爆破孔网布置
Either way, if its roots are pulled up from out of the ground as the tree topples over, then there's usually a big hole, a pit left in the ground where the roots used to be.
无论是哪种原因，如果树倒在地上时树根从地下被拔起，那么地面通常会有个大洞，在原来树根所在地留下一个坑。
Now that the Dakota Fire Hole is properly constructed, you can partially fill the fire pit chamber with dry combustible kindling materials and light the fire.
现在火坑已经挖好了，我们在坑底放好一些易燃的干燥细枝，然后在坑边上堆好引火柴堆，用火机或引火石点燃火绒，在上边堆柴火把火烧大，然后将这些火推到火坑中即可。
Once you have made the Dakota fire hole you can easily set up a cooking surface for pots and pans by laying several parallel green sticks across the fire pit as show in the picture.
一旦火坑挖好，你可以在达科他火坑的基础上做很多改进，比如在火坑上方用绿枝搭建烤架，也可以坑边上堆一些石块，做成可以放锅的简易炉灶。
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