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谷中谷
oil	valley in valley
tech.	two-story valley; two-storey valley; valley-in-valley

谷中谷: 44 phrases in 14 subjects

Agriculture	3
Animal husbandry	1
Company name	1
Desert science	1
Earth sciences	2
Electronics	1
Engineering geology	3
General	3
Geology	3
Hydroelectric power stations	3
Navigation	1
Oil / petroleum	12
Soil science	1
Technology	9