The scientists were already investigating the problem of pollution from space debris when they realised a SpaceX Falcon 9 had failed in flight.
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。关于这个话题，搜狗输入法下载提供了深入分析
第十二条 任何个人和组织办理互联网信息发布、即时通讯等服务，应当提供真实身份信息，不得实施下列行为扰乱网络实名制管理：
Source: Computational Materials Science, Volume 266