1/investigation释义:
n. 调查;调查研究
2/例句:
We convertly started an economic investigation of him.
我们暗中对他进行了经济调查。
3/investigation可以加下列介词:
on-the-spot investigation实地考察
field investigation现场调查;现场试验
experimental investigation试验研究
under investigation在调查研究中
investigation report调查报告书