courtesy of somebody

Từ điển Oxford Advanced Learner 8th

courtesy of sb/sth idiom
1. (also by courtesy of sb/sth)with the official permission of sb/sth and as a favour
•The pictures have been reproduced by courtesy of the British Museum.
2. given as a prize or provided free by a person or an organization
•Win a weekend in Rome, courtesy of Fiat.
3. as the result of a particular thing or situation
•Viewers can see the stadium from the air, courtesy of a camera fastened to the plane.
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