In our society, we know that Earth has only one moon.

在我们的社会中，我们知道，地球只有一个月亮。

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From Earth, we can only see one side of the moon.

从地球上，我们只能看到月球的一面。

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One day, Miss Moon and Anna went to the Arctic.

有一天，月亮姐姐与安娜来到了北极。

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One of them,the Apollo-11, traveled to the moon just seven months after the last X-15 flight.

VOA: special.2010.07.07

On May twenty-third, the lander rejoined the command module one hundred kilometers above the moon.

VOA: special.2009.07.08

Eagle was flying. Man had been on the moon for twenty-one and one-half hours.

VOA: special.2009.07.15

The Waxing Gibbous Moon - the lunar phase between first quarter Moon and a full Moon - will be approximately one degree south of Jupiter appearing to be only a pen width apart.

ENGADGET: PSA: Slooh's Space Camera broadcasting Moon / Jupiter conjunction right now

On the moon, we had one-sixth of Earth's gravity, allowing Neil and me to move around easily in the Eagle to put on equipment for our walk.

WSJ: Buzz Aldrin on His Lunar Home, the Eagle

Partly because of their longevity -- no one wants to change a light bulb on the Moon -- but also their hardiness.

ENGADGET: Alt-week 9.8.12: Moon farming, self powered health monitors and bringing a 50,000 year-old girl to life