planetary overrunning clutch

例句：

1. 1. The planetary nebula is a fascinating objectin the night sky.
   行星状星云是夜空中一个迷人的天体。
2. 2. Theplanetary scientists are studying the effects ofclimate change on our planet.
   行星科学家正在研究气候变化对我们星球的影响。
3. 3. Theplanetary alignment has beenpredicted to bring about a significantshift in the weather patterns.
   行星排列被预测会带来显著的天气模式变化。