The Sun, Moon, and the planets formed from a huge spinning gas cloud that collapsed into a gyrating disc.
太阳、月亮和这些星球形成于倒塌进一个旋转盘状物的一团巨大旋转汽云。
An eclipse happens when the earth and moon are in line with the sun.
地球和月亮与太阳处在一条直线上，日食就发生了。
Animals tend to be active or inactive depending on the position of the sun or moon.
动物是否活跃取决于太阳或月亮的方位。
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