(1)(使)循环((cause to) go round in a fixed path continuously)[I，I+prep，T+n， T+n+prep]：Blood/Hormones～(s)round(through/in) the body.血液/荷尔蒙在体内循环。Water～s in the pipe of some central heating systems.水在集中供热系统的管道内循环。The (action of the) heart～s blood through (round) the body.心脏(的跳动)使血液在体内循环。〖同〗flow，circle;

(2)(使)流传(流动，传播)((cause to) spread or pass around from one place，person，etc to another)[I，I+prep，T+n，T+n+prep]：The news(rumour)about him～d quickly round the town/throughout the office/at the club. 关于他的消息(谣言)迅速在全城/在整个办公室/在俱乐部传播。There's a rumour～ing that she is getting married.有谣传说她要结婚了。～a letter/a false story/information 传阅一封信/传播一谣言/传播消息;Please～these papers.请分发这些试卷。Pictures of the wanted man were～d to police around the country. 通缉犯的照片传送到全国各地警方。The reports were～d to all the members.报告传送到了每一个成员手中。〖同〗distribute，spread，scatter;〖反〗keep;

(3)走(流)动(move or flow about freely)[I]：The fan helps the air～.扇子有助于空气流动。As hostess，you are expected to～.你作为女主人，要到处走动应酬。The host～d(among the guests/from group to group) at the party.宴会上男主人(在宾客中间/从一群人到另一群人)走动应酬。

(4)使周知(inform (sb) by means of printed advertisements，notices or letters)[T+n]：We haven't been～d with details of the conference yet.我还没有收到关于那次会议详细情况的通报。

←′circle n & v;

→͵circu′lation n;͵circu′latory adj 血液循环的