CPAP治疗并不影响前臂血流的基础流量，研究者说，但经过持续6周的CPAP治疗后其对所有血管舒张剂的反应性增加。
Treatment with CPAP did not affect baseline forearm blood flow, the investigators say, but treatment with CPAP for 6 weeks improved forearm blood flow response to all vasodilators.
研究人员发现了七种主要的适应性反应，包括增加流动性、永久定居点的搬迁、维持生计的食物的变化以及依赖与其他群体的贸易。
The researchers identified seven major adaptive responses, including increased mobility, relocation of permanent settlements, changes in subsistence foods, and reliance on trade with other groups.
这些反应增加了不完全燃烧的可能性，更有可能释放未燃尽和光化学活性碳氢化合物到大气中。
These reactions increase the probability of incomplete combustion and are more likely to release uncombusted and photochemically active hydrocarbon compounds into the atmosphere.
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