First, each stone was marked with a number.

首先，每一块石头都要标上数字。

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Each stone was marked with a number.

每块石头标有一个数字。

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Each stone was marked with a number.

每块石头都标有号码。

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Each stone was marked with a number.

每个石头上都标明号码。

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Each stone was marked with a number.

每个石头上都标明号码。

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