Io and Europa are about the same size as our moon, whereas Ganymede and Callisto have diameters that are half again our moon's diameter.

木卫一和木卫二大约和月球一样大，而木卫三和木卫四大概是月球直径的一半。

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Although Jupiter has 4 major moons, you won't see the moon Callisto this evening because it will be hiding in Jupiter's shadow from 5:00 p. m. till 10:28 p. m. Central Time.

虽然木星有四颗卫星，你今晚却看不到木卫四，因为从中央标准时间下午5：00到晚上10：28她都会隐藏在木星的影子里。

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