The first is a pair of planets, each about the mass of Jupiter, that whirl around their home star 15 light years from Earth in perfect lockstep.
第一个是一对质量与木星差不多的行星，这对行星步调一致地围绕距离地球15光年的母恒星旋转。
Planets are believed to emerge from the accretion of particles in a disk of gas and dust as they whirl around the star.
行星被认为是由围绕恒星旋转的气体和尘埃组成的圆盘中的粒子累积而成。
It takes the planet only 88 days to whirl around the sun, though, so a Mercurian day lasts about three-quarters of the Mercurian year.
水星绕太阳公转一圈仅需88天，所以火星上一天相当于水星一年的3/4。
We imagine the ball to consist of innumerable minute particles, called atoms or molecules, which vibrate or whirl around one another.
我们想象一个球是由无数的微型粒子组成，称为原子或分子，一个围绕着另一个振动或旋转。
The dervish es whirl around and around without getting dizzy.
苦修僧人反复旋转而不感到头晕。
The dervishes whirl around and around without getting dizzy.
苦修僧人反复旋转而不感到头晕。
The first is a pair of planets, each about the mass of Jupiter, that whirl around their home star 15light years from Earth in perfect lockstep.
第一项是一对行星，每个大小和木星相仿，它们一前一后绕着距离地球15光年的一颗行星运行。
The first is a pair of planets, each about the mass of Jupiter, that whirl around their home star 15light years from Earth in perfect lockstep.
第一项是一对行星，每个大小和木星相仿，它们一前一后绕着距离地球15光年的一颗行星运行。
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