in circulation

基本解释

We must constantly adjust the amount of money in circulation.
我们必须对货币的流通不断进行调节。
《新英汉大辞典》
The number of credit cards in circulation has declined by almost a fifth.
流通中的信用卡数量也下降了将近五分之一。
To clarify, what matters is not the amount of dollars in circulation but the amount of capital.
说白了，在资本循环中重要的不是美元的数量而是资本的数量。
yyzznn2008.blog.163.com

The findings are published in Circulation: Journal of the American Heart Association.
Censorship only comes into play once a text has actually been in circulation for a while, only after a number of readers have found a published text to pose a threat.
控制仅仅是一本书已经出版发行一段时间,一些读者已经发现这印刷的文本,造成威胁时才起作用的。
耶鲁公开课 - 弥尔顿课程节选
Please go get the clicker at the Bass Circulation Desk, and they should have enough everybody in the class.
去巴斯借书处领取表决器吧,应该每人都能领取到一个
耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

The US Federal Reserve has a system to control the amount of currency in circulation.
FORBES: Yes, Spanish Crisis Has Triggered the Euro's Endgame