circulation

Exercise improves the circulation..运动能促进血液循环。

The Treasury Department plans to remove older coins from circulation and replace them with new ones..财政部打算收回市面上流通的旧版硬币，以新版取代。

The new technological revolution in American newspapers has brought increased ______, a wider range of publications and an ex-pansion of newspaper jobs.句意： 美国报业的新科技革命提高了发行量， 增加了报类品种， 扩大了就业机会。manipulation： 操作， 控制； reproduc-tion： 再现； 复制； penetration： 渗透。314penetration

blood circulation,血液循环，血循环

in circulation,在流通中；在从事社交活动的

water circulation,冷水环流；水流循环

lost circulation,井漏；循环液漏失

air circulation,空气循环；空气环流

reverse circulation,反循环；逆行循环

natural circulation,自然循环

commodity circulation,商品流通

general circulation,环流；大气环流

atmospheric circulation,大气环流；大气循环

systemic circulation,体循环

circulation pump,循环泵

internal circulation,内循环

circulation cooling,循环冷却

circulation process,循环流程

extracorporeal circulation,[外科学]体外循环

closed circulation,闭合环流，封闭环流；闭锁循环，闭型循环

circulation rate,循环率

circulation department,流通阅览部；发行部

pulmonary circulation,肺循环；小循环

真题例句...Multiply $3 by the more than 5 billion magstripe credit and prepaid cards in circulation in the US...第三套CET62015.6阅读理解

真题例句...a student stands before the circulation desk...第三套CET62014.12写作题