phobos

不可数 · 专有名词

A proper noun referring to the larger and innermost of the two natural satellites of the planet Mars.

• 🇨🇳火卫一，火星两颗天然卫星中较大且最靠近火星的一颗。

1. Larger moon of Mars B2 formal scientific

   The larger and innermost of the two natural satellites of Mars, discovered in 1877.

   • Phobos orbits Mars at a very close distance.
   • The surface of Phobos is covered with craters.
   • Scientists study Phobos to learn more about the Martian system.

   🇨🇳火卫一

• phoboses plural form
• phoboses' possessive plural form
• phobos's possessive singular form