The point in the orbit nearest the sun is called perihelion, while the point farthest is called aphelion.

 
  • 在軌道上最接近太陽(yáng)的點(diǎn)被稱(chēng)為近日點(diǎn),而最遠離太陽(yáng)的點(diǎn)被稱(chēng)為遠日點(diǎn)。
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