circulation
n. 发行量，销售量；血液循环；流传，流通；参加社交活动，交际；环流，循环；（图书的）借出
复数 circulations
例句
The coins were taken out of circulation.
这种硬币已停止流通。
《牛津词典》
The paper's circulation continues to climb.
这份报纸的发行量在继续增长。
A number of forged tickets are in circulation.
有一些假入场券在流通。
