Party a shall not make any change without the written approval from Part B.

甲方未经乙方书面同意，不得擅自作出任何变化。

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Part B shall keep and show to Part a the relative payment receipts.

乙方应保存并向甲方出示相关缴费凭据。

youdao

Part B shall keep and show to Part a the relative payment receipts.

乙方应保存并向甲方出示相关缴费凭据。

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