| 单词 | circulation |
| 释义 | circulation n. 1. a movement to and fro, or from and back to a starting point, esp. of a fluid in a confined area or circuit. b the movement of blood from and to the heart. c a similar movement of sap etc. 2. a the transmission or distribution (of news or information or books etc.). b the number of copies sold, esp. of journals and newspapers. 3. a currency, coin, etc. b the movement or exchange of this in a country etc. Phrases and idioms in (or out of) circulation participating (or not participating) in activities etc. Etymology: F circulation or L circulatio f. circulare CIRCULATE |
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