要想清楚地观察到月虹，天空必须非常黑暗——任何明亮的光线都可能使它模糊。
The sky must be very dark for a moonbow to be watched clearly—any bright light can obscure it.
明亮的光线影响视力。
充满生气的色彩、明亮的光线，还有那阴影，构成了这幅特别迷人的作品。
The vibrant colors and good lighting and shadow makes this a special piece that stands out.
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