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投大小单双的平台导师
- 主演： 香取慎吾 詹妮 娜塔莎·迈尔兹
- 状态：4K
- 导演：刘春霖
- 类型：纪录片
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简介：White iron is brittle and will crack during firing, and may even explode. The iron ore of the Ming Dynasty is not good to begin with, and using iron molds to cast cannons is just adding insult to injury, and the resulting cannons will be even worse. used. Clay molds don't have this problem.