如题所述
field investigation
A field investigation is a study carried out at a natural site as opposed to in a laboratory.
A field investigation is a study carried out at a natural site as opposed to in a laboratory.
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第1个回答 2009-12-04
investigation on fields ;
field creating
field creating
第2个回答 2009-12-04
field trip
第3个回答 2009-12-04
field review