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水洞
gen. watertunnel
tech. pot-hole; water hole; water sink
wind. water channel; water tunnel
水洞
: 290 phrases in 20 subjects
Architecture5
Bridge construction20
Construction1
Desert science10
Drawing1
Drilling1
Ecology3
Electronics1
Engineering geology30
General12
Geology1
Hydraulics1
Hydroelectric power stations49
Oil / petroleum10
Rail transport2
Space1
Submarines1
Swimming1
Technology135
Wind Energy5