我只需要船的来历,比如谁发明的?发明之前有什么灵感?以及他用船怎样做的试验.我希望能够在今天晚上7:30以前有答案,

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/17 20:22:57
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