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挖井 wā jǐng
desert. dug well
tech. dig a well; sink a well
挖井隧道 wā jǐng
archit. hole
挖井: 51 phrases in 12 subjects
Architecture2
Bridge construction2
Drilling3
Ecology1
Engineering geology5
General4
Geology1
Hydroelectric power stations3
Hydrology1
Rail transport1
Technology27
Water resources1