1. Show me the phot of the boy.
给我看看那个男孩的照片。

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2. Both rely on mathematical calculations to determine the location from which a positron or phot on was emitted.
这两种成像方法均依靠精确的计算来决定正电子或光于发射的位置。

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3. When saw those phot I could't help but remember the past good days before.
看到那些照片,我不禁想起美好的昔日时光。

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4. When saw those phot I could't help but remember the past good days before.
看到那些照片,我不禁想起美好的昔日时光。

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