In taking a master of embossing hologram, the movement of interference fringe will lower the quality of hologram during long time exposure.

在拍摄模压全息母版时，由于记录时间较长，那么干涉条纹随机漂移的影响将会变得十分严重，使全息图片质量下降。

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The long exposure time required for moonlight photography often means that the moon may have moved significantly over the course of the exposure.

夜间摄影需要长时间曝光，这就意味着月亮可能会在曝光期间有很明显的移动。

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You could use a tripod and a long exposure time.

你可以用三角架，并加长曝光时间。

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Doing this over long time periods can reduce your risk by reducing your exposure to whichever type of investment is nearing its top and even increase your returns.

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