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穿洞 chuāndòng
tech. through cave
轮胎穿洞 chuāndòng
auto. penetration
穿洞
: 21 phrases in 11 subjects
Automobiles2
Ceramics1
General2
Hydroelectric power stations1
Mountaineering1
Oil / petroleum1
Plastic surgery1
Surgery3
Technology5
Textile industry2
Wood processing2