生活就像踩单车，只有向前才能保持平衡！

如题.

2017-02-17 提问者:Cai hua

教师解答

尚未回答。

学生讨论

Jackchen0717:

a kind of dynamic balance

2017-02-17

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hjqcrystal:

and keep rhythm

2017-02-17

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hjqcrystal:

and keep rhythm

2017-02-17

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hjqcrystal:

and keep rhythm

2017-02-17

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hjqcrystal:

and keep rhythm

2017-02-17

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hjqcrystal:

and keep rhythm

2017-02-17

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hjqcrystal:

and keep rhythm

2017-02-17

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hjqcrystal:

and keep rhythm

2017-02-17

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hjqcrystal:

and keep rhythm

2017-02-17

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三月飞雪:

哈哈哈

2017-02-17

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