[天]巨行星

This might suggest a giant planet, at least the size of Jupiter and maybe up to four times as big.───这也许意味着存在着一个巨大的星体，至少有木星那么大，或者更达到木星的四倍大小。

But Saturn's fellow gas giant planet Jupiter has four big moons.───而和土星同样是巨大气质行星的木星却有4颗大卫星。

Our galaxy is so huge that dozens of lesser galaxies scamper about it, like moons orbiting a giant planet.───我们的银河系实在庞大，吸引着数十个较小的星系环绕着它奔跑，恰似环绕巨大行星旋转的卫星。

Jupiter is a gas giant planet, mainly composed of hydrogen and helium, the sun's average distance of 7. 7 billion kilometers.───木星是一个巨大的气体行星，主要成分为氢和氦，与太阳的平均距离为7.7亿公里。

Tyche is the nickname given to a hypothesized gas giant planet located in the Solar System's Oort cloud.───幸神星是太阳系奥尔特云内的一颗假设的气态巨行星的昵称。

As Ganymede passes behind the giant planet, it reflects sunlight which then passes through Jupiter's atmosphere.───Ganymede飞过木星的背面时，能够反射阳光，阳光就穿过大气层落到木星上。

Indeed, our galaxy is so huge that dozens of lesser galaxies scamper about it, like moons orbiting a giant planet.───我们的银河系实在庞大，吸引着数十个较小的星系环绕着它奔跑，恰似环绕巨大行星旋转的卫星。

But this year it is enlivened by a visit from the giant planet Jupiter, right on the border between Pisces and Aquarius.───但是今年却因巨大的行星—木星刚好从双鱼座和水瓶座之间经过而充满生气。