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暗河 ànhé
bridg.constr. underground river
desert. subterranean river; sunken stream
eng.geol. swallet river
hydroel.st. buried river
oil underground stream
space disappearing stream
暗河e ànhé
water.res. stream e
暗 河
: 32 phrases in 5 subjects
Ecology1
Engineering geology2
Hydroelectric power stations3
Soil science1
Technology25