Yahoo奇摩字典 網頁搜尋

搜尋結果

1. Oxford American Dictionary

   event horizon

   • IPA[əˈvent]

   • n.
     a theoretical boundary around a black hole beyond which no light or other radiation can escape.；a point of no return

   • noun: event horizon, plural noun: event horizons

2. • 釋義

   n.

   名詞

   • 1. a theoretical boundary around a black hole beyond which no light or other radiation can escape.
   • ▪ a point of no return we're nearing the event horizon of the presidential election