mid-15c., from Middle French circulation or directly from Latin circulationem (nominative circulatio), noun of action from past participle stem of circulare "to form a circle," from circulus "small ring" (see circle (n.)). Used of blood first by William Harvey, 1620s.
实用例句
1. Massage is used to relax muscles, relieve stress and improve the circulation.
按摩可以使肌肉放松，缓解压力和促进血液循环。
来自柯林斯例句
2. The supply of money in circulation was drastically reduced overnight.
流通领域的货币供应量一夜骤减。
来自柯林斯例句
3. Circulation is much more sluggish in the feet than in the hands.
脚部的循环比手部的循环缓慢得多。
来自柯林斯例句
4. Lemon juice can help to prevent economy-class syndrome by improving blood circulation.
柠檬汁能够改善血液循环，有助于预防经济舱综合征。
来自柯林斯例句
5. The combination of sex and treachery proved a copper-bottomed circulation booster.
