Why is it transparent to visible light?
为什么对可见光透明呢？
Anything that allows light to pass through it is transparent.
凡是能让光穿过自己的东西都是透明的。
Transparent objects, such as glass, air and water, allow light to pass through.
透明物，例如玻璃，空气和水，能使光穿透。
Next, should choose transparent, light color.
其次，要选择透明、浅色的。
One day soon, Windows that are transparent by day may emit light by night.
不久的某一天，白天透明的窗户会在晚上发光。
One day soon, Windows that are transparent by day may emit light by night.
不久的某一天，白天透明的窗户会在晚上发光。
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