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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第九十九条 人民警察询问被侵害人或者其他证人，可以在现场进行，也可以到其所在单位、住处或者其提出的地点进行；必要时，也可以通知其到公安机关提供证言。
Green: Will Ferrell sports movies