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汉语拼音：xuè yè xún huán

血液从心脏流向动脉，经过各组织中的毛细血管，然后从全身各处的静脉流回心脏的循环过程。血液在循环中从肺部获得氧气、从消化器官获得营养物质供组织细胞新陈代谢，并将代谢过程中产生的二氧化碳等废物从肺、肾、皮肤等处排出体外。

• 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。

• 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。

• A cool shower wakes up the body and boosts circulation.

  冷水澡可以刺激身体，促进血液循环。

• Regular exercise will improve blood circulation.

  经常锻炼会促进血液循环。

• He rubbed his limbs vigorously to get the blood circulating.

  他用力摩擦四肢让血液循环开来.

• Physical exercise administers to the circulation of the blood.

  体育锻炼有助于血液循环.

• Red blood cells transport oxygen through the bloodstream.

  红细胞通过血液循环输送氧气.

• He died of circulatory failure.

  他死于血液循环衰竭.

• The heart pumps blood.

  心脏使血液循环.

• Exercise is very important as it keeps the circulation moving and warms the extremities.

  锻炼非常重要，它可以促进血液循环，保持手脚温暖。

• This exercise whips up the circulation of the blood.

  这种运动能促进血液循环.

• We observed the circulation of blood in frogs.

  我们观察了青蛙的血液循环.

• Exercise is good for circulation.

  运动有益于血液循环.

• " The best way to maintain good blood circulation is through using the brain, " he says.

  他说: “ 保持血液循环状况良好的最好办法就是动脑筋.

• The season does induce a quickening of the blood and a heightening of humankind's sensual pleasures.

  这个季节的确会加速血液循环、提高人们感官的兴奋程度.