词典释义：
释义
available (or unavailable) to the public; in (or not in) general use
（不）在流通中；（不）在使用中
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there is a huge volume of video material in circulation .有大量录像材料流通。
used of a person who is not seen in public
（人）不在公众场合
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Anne had made a good recovery and was back in circulation .安妮恢复得很好，又出来活动了。