outer

• 指位于外部或离中心较远的，与内部或中心相对。

Describes something that is on the outside or further from the center.

1. External or on the outsideA2formal

   Situated on the outside or farther from the center.

   外部的

   • The outer layer of the planet is made of rock.
   • She wore a coat with an outer shell for protection.
   • The outer walls of the castle are very thick.

   同义词exteriorexternaloutsideoutwardperipheralsurface

   反义词innerinteriorinternal

2. Farther from the centerB1formal

   Relating to or located in the area away from the center or core.

   外部的

   • They live in the outer suburbs of the city.
   • The outer planets of the solar system are gas giants.
   • The outer regions of the forest are less explored.

   同义词exteriorexternaloutlyingoutsideoutwardperipheral

   反义词centralinnerinsideinternal