Many, though, form a ring like Saturn's at a distance of 36,000km, the place at which an object takes 24 hours to orbit the Earth and thus hovers continuously over the same point of the planet.

尽管，许多卫星在36000千米处形成一个类似土星光环的环，但这个高度的卫星都需要花费24小时绕地球一圈。因此，它们一直在地球上空的同一点盘旋。

youdao

With his 20-power telescope and with his eyes in bad shape he might have mistaken Saturn's gaseous ring to surmise that it was formed of one planet with two moons as satellites.

由于伽利略用的是20倍的望远镜，而且他眼睛的状况也很糟糕，他很可能把土星的气环搞错了，并因此得出结论-土星是由一个行星和两个卫星组成的。

youdao

The most seismically active region on the planet, the Ring of Fire has triggered countless quakes, volcanic eruptions and tsunamis.

火圈带中已经发生过无数次地震、火山爆发和海啸。

youdao

Yet scientists are already speculating that this planet may be of a similar size to Jupiter and have its own ring system.

UNESCO: Open Access to Scientific Information