the study was conducted on a loca scale and was indepwndent ------the central government.

问题描述:

the study was conducted on a loca scale and was indepwndent ------the central government.
a,on b,againstc,from d,of
可以详细的解释下吗

be independent of 独立于...之外的,不受...支配的,不依赖...的
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