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He had persuaded his science teacher to help him make a makeshift rocket. Somehow, he had managed to get his hands on the ingredients for gunpowder - potassium nitrate, sulphur and charcoal.,这一点在爱思助手下载最新版本中也有详细论述
A third person was on a US K-1 visa - for fiancées of American citizens - the US official said. The boat's owner alleged the vessel had been stolen by an employee.