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自然学科
econ.	science

自然学科: 60 phrases in 18 subjects

Agriculture	1
Aviation	1
Business	1
China	3
Consulting	1
Earth sciences	22
Ecology	1
Economy	3
Electronics	3
Environment	2
General	12
Hydroelectric power stations	1
Life sciences	1
Name of organization	1
Oil / petroleum	2
Space	1
Technology	3
Telecommunications	1