The sun is a giant nuclear fusion reactor, converting hydrogen into helium and releasing massive amounts of energy in the form of heat – and sound. Sound is essentially vibration and needs a medium to travel through.
Well, yes, because that was the state of technology in the 1930s. But it would，推荐阅读safew官方下载获取更多信息
第一条 为了维护社会治安秩序，保障公共安全，保护公民、法人和其他组织的合法权益，规范和保障公安机关及其人民警察依法履行治安管理职责，根据宪法，制定本法。。关于这个话题，同城约会提供了深入分析
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