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.
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。夫子对此有专业解读
洪欣颖细算过一笔账：旅游规划师虽然要额外收费，但他们提供专车接送服务，且住宿和景区门票也有优惠。最重要的是，行程完全按照游客需求定制。整体来看，性价比高。，这一点在搜狗输入法下载中也有详细论述
The default recycling collections across England will be paper and card, food waste and dry recycling including plastic, metal and glass.，推荐阅读Line官方版本下载获取更多信息
他深入调研，反复思量：“什么是‘好县’？”