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乐高 EV3 实验02 - 差速小车遥控 · App Inventor 2 中文网
... 二、界面组件
三、分步搭代码块
第 1 步：前进后退
第 2 步：转弯
第 3 步：原地打转与急停
第 4 步：走固定距离（进阶）
四、排错表
五、下一步
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