It is thought that high levels of fat raise the odds of the arteries clogging up, cutting the flow of blood and oxygen.
高水平的脂肪含量会使得动脉更易堵塞，并降低了血液与氧气的流动。
Three hundred million years ago, dragonflies and millipedes grew to frankly disturbing sizes - thanks in part to levels of oxygen in the atmosphere as high as 30 per cent.
三亿年前，蜻蜓和蜈蚣长得惊人的巨大，一部分原因是因为空气中的含氧量高达30%。
This type of water comes from underground sources and has low levels of oxygen, yet high amounts of sulphur and other dissolved chemicals.
这类水来源于地下水源，含氧量很低，还含有大量硫和其它化学物质。
Once photosynthesis had raised atmospheric oxygen levels high enough, the ozone layer formed, meaning that it was then possible for living things to venture onto the land.
一旦光合作用上升了大气氧气成水平足够高，臭氧层被形成，意味，它是然后可能为生存事冒险土地。
Also, it is important that people with Sickle cell trait should receive high levels of oxygen during general anaesthetics.
此外，这是非常重要的人与镰状细胞性状应得到高水平的氧期间，一般不施用麻醉剂。
It is found that the shallow donor levels produced by high dose neutron irradiation are caused by Si-O-C complex compound associated with oxygen carbon and micro-precipitation of oxygen.
发现由于大剂量中子辐照而产生的浅施主是与氧、碳及氧的微沉淀有关的硅-氧-碳络合物。
Others, like high fat meals (think cheeseburgers and BLTs) provide more sustained energy, but require our digestive system to work harder, reducing oxygen levels in the brain and making us groggy.
而其他的呢，比如说高脂肪食物(肉饼啊，三明治之类)提供更加持续的能量，但是要求我们的消化系统更加努力运转，同时降低大脑中氧含量，让我们觉得昏昏沉沉。
If high levels of methane reduce oxygen concentration in the atmosphere to below 19.5% then asphyxia can occur.
大气中若含有高浓度的甲烷，而使氧气浓度降至19.5%以下时，就会使人体产生窒息的危险。
The high oxygen content reduces carbon monoxide levels by 25 - 30 percent, according to United State Environment Protection Agency.
根据美国环保局资料，高含氧量可以减少25%-30%一氧化碳生成量。
Appropriate oxygen levels are important as damage to the eyes or lungs can result if levels are too high or too low.
精准的氧气浓度是重要的，若是不当的氧气值将对眼睛和肺部造成伤害。
Appropriate oxygen levels are important as damage to the eyes or lungs can result if levels are too high or too low.
精准的氧气浓度是重要的，若是不当的氧气值将对眼睛和肺部造成伤害。
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