谁穿过阴影飞来飞去？谁是穿过树木飞来飞去？
Who is flitting, flying through the shadows? Who is flitting, flying though the trees?
奋进号在离开地球350千米的高空中环绕着，当它以每小时27 000英里的速度急速穿过地球的阴影时，它打开了负载舱的灯光。
Orbiting 350 kilometers above planet Earth, Endeavour's payload bay is lit up as it hurtles through Earth's shadow at 27, 000 miles per hour.
十九世纪时，天文学家花了大量时间寻找穿过太阳的阴影。
In the 19th century astronomers spent a lot of time seeking shadows crossing the sun.
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