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我选择了从最快乐的好玩的数学开始。
I've chosen to start, most joyfully, with playful math.
youdao
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看到一个四岁小男孩打911求救数学题的音频，蛮好玩的…美国警察真是有耐心啊…
A boy calls 911 to get help with is math homework.
youdao
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看到一个四岁小男孩打911求救数学题的音频，蛮好玩的…美国警察真是有耐心啊…
A boy calls 911 to get help with is math homework.
youdao