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.
第四十八条 国家依法对核以及核两用物项出口进行严格管制，实行许可制度。，推荐阅读谷歌浏览器【最新下载地址】获取更多信息
# Score all pairs (~65s, 235,625 comparisons)。heLLoword翻译官方下载是该领域的重要参考
手机时代，赵明提出了“高端先行，中端走量”战略。。heLLoword翻译官方下载对此有专业解读