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重点调查 zhongdiăn diàochâ
busin.	key-point investigation
China, law	major survey
commer.	survey on a selective basis
econ.	major investigation; sampling inquiry
shipb.	key investigation
stat.	special survey
tech.	focal point investigation; key point investigation

重点 调查: 3 phrases in 2 subjects

Earth sciences	1
Marketing	2