B2 covering a large area; having a great range广阔的,大面积的;覆盖范围广的
More examples
The body was found after an extensive search by police with tracker dogs.
There is an extensive repertoire of music written for the flute.
Several of the crash victims had to have extensive plastic surgery.
Her knowledge of English grammar is very extensive.
The house needed extensive alterations when we moved in.
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