Over water the diurnal change in refraction is likely to be small.

在水面上，折光的周日变化可能是很小的。

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Refraction makes a straight stick look bent if it is partly in water.

折射使一根部分浸在水中的直棍子看起来是弯的。

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Refraction makes a straight stick look bent if it is partly in water.

折射使一根部分浸在水中的直棍子看起来是弯的。

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