我在计算地球和月亮之间的距离。

I am computing the distance between the earth and the moon.

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奥森说，事发几个月前，月亮、太阳和地球的排列方式增大了地球的潮汐力。 当时地球和月亮之间的距离是1400年以来的最短距离。

Olson — who often comes up with astronomical quirks linked to historical events — said that a few months earlier, the moon, sun and Earth lined up in a way that added extra pull on Earth's tides.

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据美国宇航局所说，整个日食过程，即在月亮位于地球和太阳之间的时间内，也仅仅在地表一条约150公里宽的狭长地带的某一时刻可以观看到。

According to NASA, a total eclipse, when the moon passes between the earth and the sun, is only visible from a narrow strip - about 150 km wide - of the Earth's surface at any one time.

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