刘晓青解释，高风险性行为是老年人感染艾滋病的主要原因。
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To bring FLASH therapy out of the lab and into clinical use, researchers like Vozenin and Loo needed machines capable of delivering fast, high doses with pinpoint precision deep inside the body. Most early studies relied on low-energy electron beams like Favaudon’s 4.5-megaelectron-volt Kinetron—sufficient for surface tumors, but unable to reach more than a few centimeters into a human body. Treating deep-seated cancers in the lung, brain, or abdomen would require far higher particle energies.，这一点在谷歌中也有详细论述
I wrote this blog title as a joke on LinkedIn, but enough people egged me on that I then fleshed it out into a full article.。wps是该领域的重要参考