Laughter produces short-term changes in the function of the heart and blood circulation, increasing heart rate and oxygen consumption.

笑会造成心脏和血液循环功能的短期变化，增加心率和耗氧量。

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Newspaper circulation continued to decline last year, but the rate is slowing, the report said.

据报道：“报纸的发行量去年继续减少，但是减少率降低了。”

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The carbon cycle influences the rate at which mountains weather down into seas, the deep circulation of ocean waters helps govern the ebb and flow of ice sheets, and so on.

碳循环影响了山脉夷为海洋的速度，海水深度循环有助于控制冰川消逝和流动，诸如此类。

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In February 2009, Newsweek announced a circulation rate base reduction at its domestic edition, from 2.6 million to 1.5 million, by January 2010.

FORBES: Why Newsweek Is On The Block

Forbes has exceeded the US (900, 000) readership circulation with a rate base of over million internationally.

FORBES: The Fastest Growing Global Media Brand

And he's trying to get the magazine biz to adopt new audience measurement metrics, arguing that the guaranteed rate base based on paid circulation is outdated.

FORBES