Many of these are oxidants that generate the free radicals that promote inflammation and blood clots that stiffen heart arteries.
很多这些成分都是氧化剂，能产生自由基导致红肿发炎和血凝块增多从而引发心脏动脉硬化。
The researchers have already managed to produce pigs that were able to generate human blood by injecting blood stem cells from humans into pig foetuses
通过对猪幼胎注射人类的血液干细胞，研究人员已经成功培育出能够产生人类血液的猪
For blood to circulate, the heart must generate enough force to overcome the resistance it meets as the passageways become smaller and smaller.
血液要能够循环无阻，心脏就必须产生足够的压力来克服管道越来越小所造成的阻力。
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