planetary ball swaging

例句：

1. 1. The planetary nebula is a fascinating example of the universe's early stages.
   行星状星云是宇宙早期阶段的一个迷人例子。
2. 2.The planetary scientists are studying the effects of climate change on our planet.
   行星科学家们正在研究气候变化对我们星球的影响。
3. 3. The planetary alignment has been predicted to bring about a significant shift in the weather patterns.
   行星排列已经被预测会带来重大的天气模式转变。