木星的卫星木卫一全是岩石,其密度为每立方厘米3.5克。
Jupiter's moon Io, whose density is 3.5 grams per cubic centimetre, is all rock.
科学家们正在仔细研究木卫二,它是木星的卫星。
One place scientists are studying very closely is Europa, a moon of Jupiter.
其次,木星的巨大质量阻止了大多数与太阳结合的彗星穿透太阳系内部。
Second, Jupiter's enormous mass prevents most Sun-bound comets from penetrating the inner solar system.
Your friend is about to go on the spaceship which is going to do the exploration of Jupiter or whatever.
你的朋友即将要登上一搜宇宙飞船,要去探索木星还是什么。
It's not going to Jupiter.It's going to some other planetary system.
它不是去木星,而是去其他的星系。
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