It occurs because blood flow gets reduced in that blood vessel.

它的发生是因为血管中的血流量减少了。

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To do CPR, you press on the sick person's chest so that blood moves through the body and takes oxygen to organs.

做心肺复苏时，你要按压病人的胸部，使血液在体内流通，将氧气输送到各个器官。

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All that blood and no oil?

血都流了，没有石油？

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"Tonight you,with your dark skin and foolish tears, you have that blood running in your veins,mijo.

VOA: special.2010.06.21

It turns out that blood within the umbilical cord is also a rich source of stem cells and again specific to a particular patient.

研究发现脐带血中,也有丰富的干细胞资源,并且对一些特殊的病人有特别的意义

耶鲁公开课 - 生物医学工程探索课程节选

What if I collect that blood from patients that are already infected with Hepatitis B, purify the Hepatitis B protein, and inject that back into people?

如果我采集那些乙肝患者的血液,抽提出乙肝病毒的蛋白质,并且将其回注入人体内,将会如何呢

耶鲁公开课 - 生物医学工程探索课程节选

To date, they have shown that the blood test results correlate with diagnoses made using the mental health gold standards the DSM-IV criteria and the Hamilton Depression Rating Scale almost 90 percent of the time.

FORBES: Could There Be a Blood Test For Depression?

But then he began hearing grisly stories of massacres in other parts of Africa albinos being sacrificed so that their blood, hair and body parts could be sold for use in rituals.

NPR: Salif Keita Savors 'La Difference'

Employing it in adult mice not only led to blood vessels that have lasted so far for over a year, but the blood vessels themselves are now surrounded with muscle tissue meaning that the body is able to use those vessels to properly regulate blood flow.

FORBES: Could Bypass Surgeries Become a Thing of the Past?