Further it Narrows the blood vessels, reducing circulation.

吸烟还可以使血管变窄，影响血液循环。

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The powder cayenne contains capsaicin, which improves blood circulation while reducing cholesterol.

辣椒粉富含的辣椒素可以促进血液流通，同时降低胆固醇含量。

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It appears to play a salutary role, helping remove cholesterol from circulation and reducing the risk of heart disease.

它发挥了有益的作用，在传输过程中帮助身体清除胆固醇，降低心脏病的发生率。

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This policy, a big part of which was reducing the number of guns in circulation, helped to lower gun-murders of under-24-year-olds from 51 in 1990 to only 16 last year.

ECONOMIST: First safety, then civility

If we want to get serious about reducing firearms violence we will have to reduce the number of pistols in circulation -- and good luck with that!

ECONOMIST: America��s gun laws