circulation
US /ˌsɝː.kjəˈleɪ.ʃən/
UK /ˌsɝː.kjəˈleɪ.ʃən/

1.
2.
发行量, 流通, 传播
the public availability or distribution of something
:
•
The newspaper has a daily circulation of 100,000 copies.
这份报纸的日发行量为10万份。
•
The book is now back in circulation after being out of print for years.
这本书在绝版多年后,现在又重新流通了。