在阴天的情况下，光架不能增强室内的照明度；它们在有直接光照的情况下，才能起到很好的效果。
In overcast conditions, light shelves cannot increase the lighting level; they operate most effectively when direct sunlight is available.
惊奇的是，即便在直接阳光照射最为强烈的情况下，水分子看起来还是出现了。
In a surprise, it appears that water molecules are present, even in the heat of direct sunlight.
太阳反射区是由于阳光照射水面——就像一面镜子——直接反射到空间站宇航观测。
Sunglint is caused by sunlight reflecting off the water surface - much like a mirror - directly back towards the astronaut observer on the Space Station.
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