extensive

adjective
B2+
OPAL
1
B2+
covering a large area; great in amount
وسیع, گسترده, پهناور
2
B2+
including or dealing with a wide range of information
گسترده, وسیع, فراگیر
Extensive research has been done into this disease.
His knowledge of music is extensive.
She has extensive experience in computers.
synonym far-reaching