要的不是「你得出了什么结论」，而是得到结论的过程。
Current X-ray lasers require facilities that are kilometres long. A cavity-based set-up about 66 metres in length has been developed that uses highly reflective mirrors to enable the generation of high-intensity pulses of narrow-band X-ray radiation. This promises to overcome the limitations of current X-ray lasers.。Line官方版本下载对此有专业解读
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СюжетСпециальная военная операция (СВО) на Украине，这一点在下载安装 谷歌浏览器 开启极速安全的 上网之旅。中也有详细论述