英语,求翻译和中文解答Can we take a bike as a mass point when we observe its wheels rotate round their axes?Can we take a moving bike as a mass point when we observe its velocity in the street?要说理由

英语,求翻译和中文解答Can we take a bike as a mass point when we observe its wheels rotate round their axes?Can we take a moving bike as a mass point when we observe its velocity in the street?要说理由 英语求翻译和解答 wa ta shi no a na ta ni ta i su ru a i yo .求翻译 和原句 la cha ta 中文意思怎么翻译? We are happy we can say 中文怎么翻译? 求解答,和翻译 英语求解答谢谢 翻译 Mayby we can get together sometime drink tea! 翻译中文 we can try to forever 求翻译 提英语 填空 和 翻译If we take fifty-eight from one hundred and eight,we can get 求糖果盒子的we can work it out的英文歌词和翻译 初二英语求解答!翻译词组 We can match them.(中文) 幸田来未-Can We Go Back 歌词幸田来未-Can We Go Back歌词的中文翻译.是中文的翻译啊! 初三英语阅读,帮忙翻译和解答 求 we are the world的中文对照翻译 求翻译英语文章翻译成中文! 这个英语什么意思,求翻译中文