moon

1. N-SING Themoon is the object that you can often see in the sky at night. It goes around the earth once every four weeks, and as it does so its appearance changes from a circle to part of a circle. 月亮[usu 'the' N, also 'full/new' N]

...the first man on the moon. …登月第一人。

2. N-COUNT A moon is an object similar to a small planet that travels around a planet. 衛(wèi)星

...Neptune's large moon. …海王星的大衛(wèi)星。